assertion  retraction  graph  subject             predicate        object                datatype    annotation
1          0           graph  obo:UBERON_0005177  rdfs:label       trunk region element  xsd:string  
1          0           graph  obo:UBERON_0005177  oio:id           UBERON:0005177        xsd:string  
1          0           graph  obo:UBERON_0005177  rdfs:subClassOf  obo:UBERON_0000062    _IRI        
1          0           graph  obo:UBERON_0005177  rdf:type         owl:Class             _IRI