Historically NCI Thesaurus has been published in the OWL 1 format. Within the next few months EVS will switch to the current w3 standard OWL format known as OWL2 (https://www.w3.org/OWL/). Changes: ________________ Most data type specifications have been removed. owl 1 <P108 rdf:datatype="http://www.w3.org/2001/XMLSchema#string">Blood</P108> owl 2 <P108>Blood</P108> ________________ Annotation properties with a rdfs:Range of owl:DataRange have now been adjusted to now have a rdfs:Range of a separate resource of rdfs:Datatype owl 1 <owl:AnnotationProperty rdf:about="http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#P106â€> <rdfs:range> <owl:DataRange> <owl:oneOf rdf:parseType="Resource"> <rdf:first rdf:datatype="http://www.w3.org/2001/XMLSchema#string" >Acquired Abnormality</rdf:first> owl 2 <owl:AnnotationProperty rdf:about="http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#P106"> <rdfs:range rdf:resource="http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#Semantic_Type-enum"/> … … <rdfs:Datatype rdf:about="http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#Semantic_Type-enum"> <owl:equivalentClass> <rdfs:Datatype> <owl:oneOf> <rdf:Description> <rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#List"/> <rdf:first>Acquired Abnormality</rdf:first> ________________ Associations have changed from owl:ObjectProperty with rdf:type owl:AnnotationProperty to owl:AnnotationProperty with rdfs:Range of anyURI owl 1 <owl:ObjectProperty rdf:about="#A8"> <rdf:type rdf:resource="http://www.w3.org/2002/07/owl#AnnotationProperty"/> owl 2 <owl:AnnotationProperty rdf:about="#A8"> <rdfs:range rdf:resource="http://www.w3.org/2001/XMLSchema#anyURI"/> _______________ Embedded XML Qualifiers have become annotations on annotations. The properties being annotated are no longer specified as rdf:parseType=“Literal†owl 1 <P90 rdf:parseType="Literal"><ncicp:ComplexTerm><ncicp:term-name>BLOOD</ncicp:term-name><ncicp:term-group>PT</ncicp:term-group><ncicp:term-source>CDISC</ncicp:term-source></ncicp:ComplexTerm></P90> owl 2 <P90>BLOOD</P90> </owl:Class> <owl:Axiom> <owl:annotatedSource rdf:resource="http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C12434"/> <owl:annotatedProperty rdf:resource="http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#P90"/> <owl:annotatedTarget>BLOOD</owl:annotatedTarget> <P383>PT</P383> <P384>CDISC</P384> </owl:Axiom> ______________________