@prefix adms:  <http://www.w3.org/ns/adms#> .
@prefix dc:    <http://purl.org/dc/elements/1.1/> .
@prefix orca:  <http://vocab.deri.ie/orca#> .
@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> .
@prefix foaf:  <http://xmlns.com/foaf/0.1/> .
@prefix owl:   <http://www.w3.org/2002/07/owl#> .
@prefix xsd:   <http://www.w3.org/2001/XMLSchema#> .
@prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix vann:  <http://purl.org/vocab/vann/> .
@prefix dcterms: <http://purl.org/dc/terms/> .

orca:AuthorImplicitly
        a             orca:Source ;
        rdfs:comment  "Indicates knowledge implicitly attributed to the author."@en ;
        rdfs:label    "author, implicitly"@en .

orca:LackOfKnowledge  a               orca:ConfidenceLevel ;
        rdfs:comment                  "Indicates lack of knowledge."@en ;
        rdfs:label                    "lack of knowledge"@en ;
        orca:directlyLessCertainThan  orca:HypotheticalKnowledge .

orca:AuthorExplicitly
        a             orca:Source ;
        rdfs:comment  "Indicates knowledge explicitly attributed to the author."@en ;
        rdfs:label    "author, explicitly"@en .

orca:ttl  a                 adms:SemanticDistribution ;
        dcterms:FileFormat  <http://vocab.deri.ie/orca> ;
        adms:accessURL      "http://vocab.deri.ie/orca.ttl" ;
        adms:status         <http://purl.org/adms/status/Completed> .

orca:Unidentified  a  orca:Basis ;
        rdfs:comment  "Indicates knowledge whose basis is unidentified."@en ;
        rdfs:label    "unidentified"@en .

orca:hasConfidenceLevel
        a             rdf:Property ;
        rdfs:comment  "Indicates the confidence/certainty level of the knowledge." ;
        rdfs:label    "hasConfidenceLevel" ;
        rdfs:range    orca:ConfidenceLevel .

<http://vocab.deri.ie/orca#Jodi%20Schneider>
        a              foaf:Person ;
        foaf:homepage  <http://vocab.deri.ie/orca> ;
        foaf:mbox      <mailto:jodi.schneider@deri.org> ;
        foaf:name      "Jodi Schneider" .

orca:Source  a        owl:Class , rdfs:Class ;
        rdfs:comment  "Indicates the source of the knowledge" ;
        rdfs:label    "Source" .

orca:lessCertain  a  rdf:Property ;
        rdfs:label  "lessCertain" .

orca:moreCertain  a  rdf:Property ;
        rdfs:label  "moreCertain" .

orca:Basis  a         owl:Class , rdfs:Class ;
        rdfs:comment  "Indicates the basis of the knowledge" ;
        rdfs:label    "Basis" .

orca:DubitativeKnowledge
        a                             orca:ConfidenceLevel ;
        rdfs:comment                  "Indicates dubitative knowledge: higher likelihood but short of complete certainty."@en ;
        rdfs:label                    "dubitative knowledge: higher likelihood but short of complete certainty"@en ;
        orca:directlyLessCertainThan  orca:DoxasticKnowledge ;
        orca:directlyMoreCertainThan  orca:HypotheticalKnowledge .

orca:Reasoning  a     orca:Basis ;
        rdfs:comment  "Indicates knowledge known by reasoning."@en ;
        rdfs:label    "reasoning"@en .

orca:directlyMoreCertainThan
        a                   rdf:Property ;
        rdfs:label          "directlyMoreCertainThan" ;
        rdfs:subPropertyOf  orca:moreCertain .

orca:Data  a          orca:Basis ;
        rdfs:comment  "Indicates knowledge known by data."@en ;
        rdfs:label    "data"@en .

orca:directlyLessCertainThan
        a                   rdf:Property ;
        rdfs:label          "directlyLessCertainThan" ;
        rdfs:subPropertyOf  orca:lessCertain .

orca:NamedExternalSource
        a             orca:Source ;
        rdfs:comment  "Indicates knowledge attributed to a named external source (either explicitly or as a reference)."@en ;
        rdfs:label    "named external source"@en .

orca:NoSource  a      orca:Source ;
        rdfs:comment  "Indicates knowledge not attributed to any source."@en ;
        rdfs:label    "no source"@en .

orca:hasSource  a     rdf:Property ;
        rdfs:comment  "Indicates the source of the knowledge." ;
        rdfs:label    "hasSource" ;
        rdfs:range    orca:Source .

<http://vocab.deri.ie/orca>
        a                              adms:SemanticAsset , owl:Ontology ;
        dc:creator                     <http://vocab.deri.ie/orca#Jodi%20Schneider> , orca:ahogan ;
        dcterms:created                "2012-07-19"^^xsd:date ;
        dcterms:description            "orca, the Ontology of Reasoning, Certainty and Attribution, is an ontology for characterizing the certainty of information, how it is known, and its source" ;
        dcterms:modified               "2012-11-09"^^xsd:date ;
        dcterms:partOf                 <http://vocab.deri.ie> ;
        dcterms:status                 <http://purl.org/adms/status/UnderDevelopment> ;
        dcterms:title                  "orca, the Ontology of Reasoning, Certainty and Attribution" ;
        dcterms:type                   <http://purl.org/adms/assettype/Ontology> ;
        vann:preferredNamespacePrefix  "orca" ;
        vann:preferredNamespaceUri     "http://vocab.deri.ie/orca#" ;
        foaf:homepage                  <http://vocab.deri.ie/orca.html> .

orca:DoxasticKnowledge
        a                             orca:ConfidenceLevel ;
        rdfs:comment                  "Indicates duoxastic knowledge: complete certainty, reflecting an accepted, known and/or proven fact."@en ;
        rdfs:label                    "doxastic knowledge: complete certainty, reflecting an accepted, known and/or proven fact"@en ;
        orca:directlyMoreCertainThan  orca:DubitativeKnowledge .

orca:ConfidenceLevel  a  owl:Class , rdfs:Class ;
        rdfs:comment  "Indicates how certain the knowledge is" ;
        rdfs:label    "ConfidenceLevel" .

orca:DERI  a           dcterms:Agent ;
        foaf:homepage  <http://vocab.deri.ie/orca> ;
        foaf:member    <http://vocab.deri.ie/orca#Jodi%20Schneider> ;
        foaf:name      "DERI" .

orca:HypotheticalKnowledge
        a                             orca:ConfidenceLevel ;
        rdfs:comment                  "Indicates hypothetical knowledge: low certainty."@en ;
        rdfs:label                    "hypothetical knowledge: low certainty"@en ;
        orca:directlyLessCertainThan  orca:DubitativeKnowledge ;
        orca:directlyMoreCertainThan  orca:LackOfKnowledge .

orca:hasBasis  a      rdf:Property ;
        rdfs:comment  "Indicates the basis of the knowledge." ;
        rdfs:label    "hasBasis" ;
        rdfs:range    orca:Basis .

orca:NamelessExternalSource
        a             orca:Source ;
        rdfs:comment  "Indicates knowledge attributed to a nameless external source."@en ;
        rdfs:label    "nameless external source"@en .

orca:rdf  a                 adms:SemanticDistribution ;
        dcterms:FileFormat  <http://vocab.deri.ie/orca> ;
        adms:accessURL      "http://vocab.deri.ie/orca.rdf" ;
        adms:status         <http://purl.org/adms/status/Completed> .

orca:ahogan  a         foaf:Person ;
        foaf:homepage  <http://vocab.deri.ie/orca> ;
        foaf:name      "Aidan Hogan" .