assertion  retraction  graph  subject       predicate        object        datatype    annotation
1          0           graph  DOID:0080892  rdfs:subClassOf  DOID:0080890  _IRI        
1          0           graph  DOID:0080891  rdfs:subClassOf  DOID:0080890  _IRI        
1          0           graph  DOID:0081253  rdfs:subClassOf  DOID:0080890  _IRI        
1          0           graph  DOID:0080890  oio:id           DOID:0080890  xsd:string  
1          0           graph  DOID:0081252  rdfs:subClassOf  DOID:0080890  _IRI