assertion  retraction  graph  subject             predicate        object                  datatype    annotation
1          0           graph  obo:UBERON_0013515  rdfs:label       subdivision of oviduct  xsd:string  
1          0           graph  obo:UBERON_0013515  oio:id           UBERON:0013515          xsd:string  
1          0           graph  obo:UBERON_0013515  rdfs:subClassOf  obo:UBERON_0013522      _IRI        
1          0           graph  obo:UBERON_0013515  rdfs:subClassOf  obo:UBERON_0005156      _IRI        
1          0           graph  obo:UBERON_0013515  rdf:type         owl:Class               _IRI