assertion  retraction  graph  subject             predicate        object                  datatype    annotation
1          0           graph  obo:UBERON_0005156  rdfs:label       reproductive structure  xsd:string  
1          0           graph  obo:UBERON_0005156  oio:id           UBERON:0005156          xsd:string  
1          0           graph  obo:UBERON_0005156  rdfs:subClassOf  obo:UBERON_0010000      _IRI        
1          0           graph  obo:UBERON_0005156  rdf:type         owl:Class               _IRI