@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix dctype: <http://purl.org/dc/dcmitype/> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix dc: <http://purl.org/dc/elements/1.1/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix ns0: <http://iandavis.com/id/> .
@prefix rel: <http://purl.org/vocab/relationship/> .
@prefix vann: <http://purl.org/vocab/vann/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ns1: <http://www.perceive.net/schemas/relationship/> .

<http://vocab.org/relationship/.turtle> rdf:type foaf:Document ,
                                                 dctype:Text ;
                                        foaf:primaryTopic <http://purl.org/vocab/relationship/> ;
                                        dct:hasFormat <http://vocab.org/relationship/.rdf> ,
                                                      <http://vocab.org/relationship/.html> ,
                                                      <http://vocab.org/relationship/.json> ;
                                        foaf:topic <http://purl.org/vocab/relationship/> .

<http://vocab.org/relationship/.rdf> rdf:type dctype:Text ,
                                              foaf:Document ;
                                     dc:format "application/rdf+xml" ;
                                     rdfs:label "RDF/XML" .

<http://vocab.org/relationship/.html> rdf:type dctype:Text ,
                                               foaf:Document ;
                                      dc:format "text/html" ;
                                      rdfs:label "HTML" .

<http://vocab.org/relationship/.json> rdf:type dctype:Text ,
                                               foaf:Document ;
                                      dc:format "application/json" ;
                                      rdfs:label "JSON" .

<http://purl.org/vocab/relationship/> rdf:type owl:Ontology ;
                                      dc:creator ns0:me ,
                                                 _:arccfdfb1 ;
                                      dc:title "RELATIONSHIP: A vocabulary for describing relationships between people" ;
                                      dc:description "A vocabulary for describing relationships between people" ;
                                      dc:identifier "http://purl.org/vocab/relationship/rel-vocab-20050810" ;
                                      dct:isVersionOf <http://purl.org/vocab/relationship/> ;
                                      dct:replaces rel:rel-vocab-20090515 ;
                                      vann:preferredNamespaceUri "http://purl.org/vocab/relationship" ;
                                      vann:preferredNamespacePrefix "rel" ;
                                      vann:example <http://purl.org/vocab/relationship/rel-example-foaf-20040303.html> ,
                                                   <http://purl.org/vocab/relationship/rel-example-html-20040308.html> ;
                                      dct:issued "2004-02-11" ;
                                      skos:changeNote _:arccfdfb2 ;
                                      skos:historyNote _:arccfdfb3 ,
                                                       _:arccfdfb4 ,
                                                       _:arccfdfb5 .

ns0:me rdf:type foaf:Person ;
       foaf:name "Ian Davis" .

_:arccfdfb1 rdf:type foaf:Person ;
            foaf:name "Eric Vitiello Jr" .

<http://purl.org/vocab/relationship/rel-example-foaf-20040303.html> dc:title "Using With FOAF" .

<http://purl.org/vocab/relationship/rel-example-html-20040308.html> dc:title "Using With HTML and XHTML" .

_:arccfdfb2 rdf:value "Added isDefinedBy properties and updated documentation" ;
            dc:date "2005-08-10" ;
            dc:creator "Ian Davis" .

_:arccfdfb3 rdf:value "Typed vocabulary as owl:Ontology" ;
            dc:date "2009-05-15" ;
            dc:creator "Ian Davis" .

_:arccfdfb4 rdf:value "Incorporated changes suggested by Henry Story on foaf-dev list" ;
            dc:date "2010-02-09" ;
            dc:creator "Ian Davis" .

_:arccfdfb5 rdf:value "Asserted that foaf:knows is rdfs:subPropertyOf rel:knowsOf" ;
            dc:date "2010-02-09" ;
            dc:creator "Ian Davis" .

foaf:knows rdfs:subPropertyOf rel:knowsOf .

rel:friendOf rdf:type owl:SymmetricProperty ;
             owl:equivalentClass ns1:friendOf ;
             rdfs:subPropertyOf foaf:knows ,
                                owl:differentFrom ;
             rdfs:label "friend of"@en ;
             skos:definition "A person who shares mutual friendship with this person."@en ;
             rdfs:domain foaf:Person ;
             rdfs:range foaf:Person ;
             rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
             skos:historyNote _:arccfdfb6 .

_:arccfdfb6 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
            dc:date "2010-02-09" ;
            dc:creator "Ian Davis" .

rel:acquaintanceOf rdf:type owl:SymmetricProperty ;
                   owl:equivalentClass ns1:acquaintanceOf ;
                   rdfs:subPropertyOf foaf:knows ,
                                      owl:differentFrom ;
                   rdfs:label "acquaintance of"@en ;
                   skos:definition "A person having more than slight or superficial knowledge of this person but short of friendship."@en ;
                   rdfs:domain foaf:Person ;
                   rdfs:range foaf:Person ;
                   rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                   skos:historyNote _:arccfdfb7 .

_:arccfdfb7 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
            dc:date "2010-02-09" ;
            dc:creator "Ian Davis" .

rel:parentOf rdf:type rdf:Property ;
             owl:equivalentClass ns1:parentOf ;
             owl:inverseOf rel:childOf ;
             rdfs:subPropertyOf foaf:knows ,
                                owl:differentFrom ;
             rdfs:label "parent of"@en ;
             skos:definition "A person who has given birth to or nurtured and raised this person."@en ;
             rdfs:domain foaf:Person ;
             rdfs:range foaf:Person ;
             rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
             skos:historyNote _:arccfdfb8 .

_:arccfdfb8 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
            dc:date "2010-02-09" ;
            dc:creator "Ian Davis" .

rel:siblingOf rdf:type owl:SymmetricProperty ;
              owl:equivalentClass ns1:siblingOf ;
              rdfs:subPropertyOf foaf:knows ,
                                 owl:differentFrom ;
              rdfs:label "sibling of"@en ;
              skos:definition "A person having one or both parents in common with this person."@en ;
              rdfs:domain foaf:Person ;
              rdfs:range foaf:Person ;
              rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
              skos:historyNote _:arccfdfb9 .

_:arccfdfb9 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
            dc:date "2010-02-09" ;
            dc:creator "Ian Davis" .

rel:childOf rdf:type rdf:Property ;
            owl:equivalentClass ns1:childOf ;
            owl:inverseOf rel:parentOf ;
            rdfs:subPropertyOf foaf:knows ,
                               owl:differentFrom ;
            rdfs:label "child of"@en ;
            skos:definition "A person who was given birth to or nurtured and raised by this person."@en ;
            rdfs:domain foaf:Person ;
            rdfs:range foaf:Person ;
            rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
            skos:historyNote _:arccfdfb10 .

_:arccfdfb10 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:grandchildOf rdf:type rdf:Property ;
                 owl:equivalentClass ns1:grandchildOf ;
                 owl:inverseOf rel:grandparentOf ;
                 rdfs:subPropertyOf foaf:knows ,
                                    owl:differentFrom ;
                 rdfs:label "grandchild of"@en ,
                            "Grandchild Of" ;
                 skos:definition "A person who is a child of any of this person's children."@en ;
                 rdfs:domain foaf:Person ;
                 rdfs:range foaf:Person ;
                 rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                 skos:historyNote _:arccfdfb11 .

_:arccfdfb11 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:spouseOf rdf:type owl:SymmetricProperty ;
             owl:equivalentClass ns1:spouseOf ;
             rdfs:subPropertyOf foaf:knows ,
                                owl:differentFrom ;
             rdfs:label "spouse of"@en ;
             skos:definition "A person who is married to this person"@en ;
             rdfs:range foaf:Person ;
             rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
             skos:historyNote _:arccfdfb12 .

_:arccfdfb12 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:enemyOf rdf:type rdf:Property ;
            owl:equivalentClass ns1:enemyOf ;
            rdfs:subPropertyOf foaf:knows ,
                               owl:differentFrom ;
            rdfs:label "enemy of"@en ;
            skos:definition "A person towards whom this person feels hatred, intends injury to, or opposes the interests of."@en ;
            rdfs:domain foaf:Person ;
            rdfs:range foaf:Person ;
            rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
            skos:historyNote _:arccfdfb13 .

_:arccfdfb13 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:antagonistOf rdf:type rdf:Property ;
                 owl:equivalentClass ns1:antagonistOf ;
                 rdfs:subPropertyOf foaf:knows ,
                                    owl:differentFrom ;
                 rdfs:label "antagonist of"@en ;
                 skos:definition "A person who opposes and contends against this person."@en ;
                 rdfs:domain foaf:Person ;
                 rdfs:range foaf:Person ;
                 rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                 skos:historyNote _:arccfdfb14 .

_:arccfdfb14 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:ambivalentOf rdf:type rdf:Property ;
                 owl:equivalentClass ns1:ambivalentOf ;
                 rdfs:label "ambivalent of"@en ;
                 skos:definition "A person towards whom this person has mixed feelings or emotions."@en ;
                 rdfs:domain foaf:Person ;
                 rdfs:range foaf:Person ;
                 rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                 skos:historyNote _:arccfdfb15 ,
                                  _:arccfdfb16 ;
                 rdfs:subPropertyOf owl:differentFrom .

_:arccfdfb15 rdf:value "Removed assertion that this property is a sub-property of foaf:knows due to reciprocity requirements. It is possible for one to be ambivalent of another without that person knowing the first." ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

_:arccfdfb16 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:lostContactWith rdf:type owl:SymmetricProperty ;
                    rdfs:subPropertyOf foaf:knows ,
                                       owl:differentFrom ;
                    rdfs:label "lost contact with"@en ;
                    skos:definition "A person who was once known by this person but has subsequently become uncontactable."@en ;
                    rdfs:domain foaf:Person ;
                    rdfs:range foaf:Person ;
                    rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                    skos:historyNote _:arccfdfb17 .

_:arccfdfb17 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:knowsOf rdf:type rdf:Property ;
            rdfs:label "knows of"@en ;
            skos:definition "A person who has come to be known to this person through their actions or position."@en ;
            rdfs:domain foaf:Person ;
            rdfs:range foaf:Person ;
            rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
            skos:historyNote _:arccfdfb18 ,
                             _:arccfdfb19 ,
                             _:arccfdfb20 ;
            rdfs:subPropertyOf owl:differentFrom .

_:arccfdfb18 rdf:value "Removed assertion that this property is a sub-property of foaf:knows due to reciprocity requirements. It is possible for one to know of another without that person knowing the first." ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

_:arccfdfb19 rdf:value "Assert that foaf:knows is rdfs:subPropertyOf rel:knowsOf" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

_:arccfdfb20 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:wouldLikeToKnow rdf:type rdf:Property ;
                    rdfs:label "would like to know"@en ;
                    skos:definition "A person whom this person would desire to know more closely."@en ;
                    rdfs:domain foaf:Person ;
                    rdfs:range foaf:Person ;
                    rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                    skos:historyNote _:arccfdfb21 ,
                                     _:arccfdfb22 ;
                    rdfs:subPropertyOf owl:differentFrom .

_:arccfdfb21 rdf:value "Removed assertion that this property is a sub-property of foaf:knows which would imply that the two people already know one another." ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

_:arccfdfb22 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:knowsInPassing rdf:type rdf:Property ;
                   rdfs:subPropertyOf foaf:knows ,
                                      owl:differentFrom ;
                   rdfs:label "knows in passing"@en ;
                   skos:definition "A person whom this person has slight or superficial knowledge of."@en ;
                   rdfs:domain foaf:Person ;
                   rdfs:range foaf:Person ;
                   rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                   skos:historyNote _:arccfdfb23 .

_:arccfdfb23 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:knowsByReputation rdf:type rdf:Property ;
                      rdfs:label "knows by reputation"@en ;
                      skos:definition "A person known by this person primarily for a particular action, position or field of endeavour."@en ;
                      rdfs:domain foaf:Person ;
                      rdfs:range foaf:Person ;
                      rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                      skos:historyNote _:arccfdfb24 ,
                                       _:arccfdfb25 ;
                      rdfs:subPropertyOf owl:differentFrom .

_:arccfdfb24 rdf:value "Removed assertion that this property is a sub-property of foaf:knows due to reciprocity requirements. It is possible for one to know of another by reputation without that person knowing the first." ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

_:arccfdfb25 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:closeFriendOf rdf:type owl:SymmetricProperty ;
                  rdfs:subPropertyOf foaf:knows ,
                                     owl:differentFrom ;
                  rdfs:label "close friend of"@en ;
                  skos:definition "A person who shares a close mutual friendship with this person."@en ;
                  rdfs:domain foaf:Person ;
                  rdfs:range foaf:Person ;
                  rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                  skos:historyNote _:arccfdfb26 .

_:arccfdfb26 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:hasMet rdf:type owl:SymmetricProperty ;
           rdfs:subPropertyOf foaf:knows ,
                              owl:differentFrom ;
           rdfs:label "has met"@en ;
           skos:definition "A person who has met this person whether in passing or longer."@en ;
           rdfs:domain foaf:Person ;
           rdfs:range foaf:Person ;
           rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
           skos:historyNote _:arccfdfb27 .

_:arccfdfb27 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:worksWith rdf:type owl:SymmetricProperty ;
              rdfs:subPropertyOf foaf:knows ,
                                 owl:differentFrom ;
              rdfs:label "works with"@en ;
              skos:definition "A person who works for the same employer as this person."@en ;
              rdfs:domain foaf:Person ;
              rdfs:range foaf:Person ;
              rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
              skos:historyNote _:arccfdfb28 ,
                               _:arccfdfb29 .

_:arccfdfb28 rdf:value "Removed assertion that this property is transitive." ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

_:arccfdfb29 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:colleagueOf rdf:type owl:SymmetricProperty ;
                rdfs:subPropertyOf foaf:knows ,
                                   owl:differentFrom ;
                rdfs:label "colleague of"@en ;
                skos:definition "A person who is a member of the same profession as this person."@en ;
                rdfs:domain foaf:Person ;
                rdfs:range foaf:Person ;
                rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                skos:historyNote _:arccfdfb30 .

_:arccfdfb30 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:collaboratesWith rdf:type owl:SymmetricProperty ;
                     rdfs:subPropertyOf foaf:knows ,
                                        owl:differentFrom ;
                     rdfs:label "collaborates with"@en ;
                     skos:definition "A person who works towards a common goal with this person."@en ;
                     rdfs:domain foaf:Person ;
                     rdfs:range foaf:Person ;
                     rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                     skos:historyNote _:arccfdfb31 .

_:arccfdfb31 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:employerOf rdf:type rdf:Property ;
               owl:inverseOf rel:employedBy ;
               rdfs:subPropertyOf foaf:knows ,
                                  owl:differentFrom ;
               rdfs:label "employer of"@en ;
               skos:definition "A person who engages the services of this person."@en ;
               rdfs:domain foaf:Person ;
               rdfs:range foaf:Person ;
               rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
               skos:historyNote _:arccfdfb32 .

_:arccfdfb32 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:employedBy rdf:type rdf:Property ;
               owl:inverseOf rel:employerOf ;
               rdfs:subPropertyOf foaf:knows ,
                                  owl:differentFrom ;
               rdfs:label "employed by"@en ;
               skos:definition "A person for whom this person's services have been engaged."@en ;
               rdfs:domain foaf:Person ;
               rdfs:range foaf:Person ;
               rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
               skos:historyNote _:arccfdfb33 .

_:arccfdfb33 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:mentorOf rdf:type rdf:Property ;
             owl:inverseOf rel:apprenticeTo ;
             rdfs:subPropertyOf foaf:knows ,
                                owl:differentFrom ;
             rdfs:label "mentor of"@en ;
             skos:definition "A person who serves as a trusted counselor or teacher to this person."@en ;
             rdfs:domain foaf:Person ;
             rdfs:range foaf:Person ;
             rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
             skos:historyNote _:arccfdfb34 .

_:arccfdfb34 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:apprenticeTo rdf:type rdf:Property ;
                 owl:inverseOf rel:mentorOf ;
                 rdfs:subPropertyOf foaf:knows ,
                                    owl:differentFrom ;
                 rdfs:label "apprentice to"@en ;
                 skos:definition "A person to whom this person serves as a trusted counselor or teacher."@en ;
                 rdfs:domain foaf:Person ;
                 rdfs:range foaf:Person ;
                 rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                 skos:historyNote _:arccfdfb35 .

_:arccfdfb35 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:livesWith rdf:type owl:SymmetricProperty ,
                       owl:TransitiveProperty ;
              rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
              rdfs:subPropertyOf foaf:knows ,
                                 owl:differentFrom ;
              rdfs:label "lives with"@en ;
              skos:definition "A person who shares a residence with this person."@en ;
              rdfs:domain foaf:Person ;
              rdfs:range foaf:Person ;
              skos:historyNote _:arccfdfb36 .

_:arccfdfb36 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:neighborOf rdf:type owl:SymmetricProperty ;
               rdfs:subPropertyOf foaf:knows ,
                                  owl:differentFrom ;
               rdfs:label "neighbor of"@en ;
               skos:definition "A person who lives in the same locality as this person."@en ;
               rdfs:domain foaf:Person ;
               rdfs:range foaf:Person ;
               rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
               skos:historyNote _:arccfdfb37 ,
                                _:arccfdfb38 .

_:arccfdfb37 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

_:arccfdfb38 rdf:value "Removed assertion that this property is transitive." ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:grandparentOf rdf:type rdf:Property ;
                  owl:inverseOf rel:grandchildOf ;
                  rdfs:subPropertyOf foaf:knows ,
                                     owl:differentFrom ;
                  rdfs:label "grandparent of"@en ;
                  skos:definition "A person who is the parent of any of this person's parents."@en ;
                  rdfs:domain foaf:Person ;
                  rdfs:range foaf:Person ;
                  rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                  skos:historyNote _:arccfdfb39 .

_:arccfdfb39 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:lifePartnerOf rdf:type owl:SymmetricProperty ;
                  rdfs:subPropertyOf foaf:knows ,
                                     owl:differentFrom ;
                  rdfs:label "life partner of"@en ;
                  skos:definition "A person who has made a long-term commitment to this person's."@en ;
                  rdfs:domain foaf:Person ;
                  rdfs:range foaf:Person ;
                  rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                  skos:historyNote _:arccfdfb40 .

_:arccfdfb40 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:engagedTo rdf:type owl:SymmetricProperty ;
              rdfs:subPropertyOf foaf:knows ,
                                 owl:differentFrom ;
              rdfs:label "engaged to"@en ;
              skos:definition "A person to whom this person is betrothed."@en ;
              rdfs:domain foaf:Person ;
              rdfs:range foaf:Person ;
              rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
              skos:historyNote _:arccfdfb41 .

_:arccfdfb41 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:ancestorOf rdf:type owl:TransitiveProperty ;
               owl:inverseOf rel:descendantOf ;
               rdfs:label "ancestor of"@en ;
               skos:definition "A person who is a descendant of this person."@en ;
               rdfs:domain foaf:Person ;
               rdfs:range foaf:Person ;
               rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
               skos:historyNote _:arccfdfb42 ,
                                _:arccfdfb43 ;
               rdfs:subPropertyOf owl:differentFrom .

rel:descendantOf rdfs:label "Descendant Of" ,
                            "descendant of"@en ;
                 rdf:type owl:TransitiveProperty ;
                 owl:inverseOf rel:ancestorOf ;
                 skos:definition "A person from whom this person is descended."@en ;
                 rdfs:domain foaf:Person ;
                 rdfs:range foaf:Person ;
                 rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                 skos:historyNote _:arccfdfb44 ,
                                  _:arccfdfb45 ;
                 rdfs:subPropertyOf owl:differentFrom .

_:arccfdfb42 rdf:value "Removed assertion that this property is a sub-property of foaf:knows. foaf:knows requires a reciprocation that may not be possible for distant ancestors." ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

_:arccfdfb43 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

_:arccfdfb44 rdf:value "Removed assertion that this property is a sub-property of foaf:knows. foaf:knows requires a reciprocation that may not be possible for distant descendants." ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

_:arccfdfb45 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:Relationship rdf:type rdfs:Class ;
                 rdfs:label "relationship"@en ;
                 skos:definition "A particular type of connection existing between people related to or having dealings with each other."@en ;
                 rdfs:isDefinedBy <http://purl.org/vocab/relationship/> .

rel:participantIn rdf:type rdf:Property ;
                  rdfs:label "participant in"@en ;
                  rdfs:domain foaf:Person ;
                  rdfs:range rel:Relationship ;
                  rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                  skos:historyNote _:arccfdfb46 .

_:arccfdfb46 rdf:value "Removed assertion that this property is a sub-property of foaf:knows." ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:participant rdf:type rdf:Property ;
                rdfs:label "participant"@en ;
                rdfs:domain rel:Relationship ;
                rdfs:range foaf:Person ;
                rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                skos:historyNote _:arccfdfb47 .

_:arccfdfb47 rdf:value "Removed assertion that this property is a sub-property of foaf:knows." ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

rel:influencedBy rdf:type rdf:Property ;
                 rdfs:label "influenced by"@en ;
                 skos:definition "a person who has influenced this person."@en ;
                 rdfs:domain foaf:Person ;
                 rdfs:range foaf:Person ;
                 rdfs:isDefinedBy <http://purl.org/vocab/relationship/> ;
                 skos:historyNote _:arccfdfb48 ,
                                  _:arccfdfb49 ;
                 rdfs:subPropertyOf owl:differentFrom .

_:arccfdfb48 rdf:value "Removed assertion that this property is a sub-property of foaf:knows due to reciprocity requirements. It is possible for one to be influenced by another by reputation without that person knowing the first." ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .

_:arccfdfb49 rdf:value "Asserted that this property is a sub-property of owl:differentFrom, indicating that this is a relationship between different individuals" ;
             dc:date "2010-02-09" ;
             dc:creator "Ian Davis" .