assertion  retraction  graph  subject             predicate        object                         datatype    annotation
1          0           graph  obo:UBERON_3000961  rdfs:label       external integument structure  xsd:string  
1          0           graph  obo:UBERON_3000961  oio:id           UBERON:3000961                 xsd:string  
1          0           graph  obo:UBERON_3000961  rdfs:subClassOf  obo:UBERON_0003102             _IRI        
1          0           graph  obo:UBERON_3000961  rdf:type         owl:Class                      _IRI