assertion  retraction  graph  subject       predicate        object        datatype    annotation
1          0           graph  DOID:0050612  rdfs:subClassOf  DOID:0060262  _IRI        
1          0           graph  DOID:0080640  rdfs:subClassOf  DOID:0060262  _IRI        
1          0           graph  DOID:13768    rdfs:subClassOf  DOID:0060262  _IRI        
1          0           graph  DOID:0060262  oio:id           DOID:0060262  xsd:string  
1          0           graph  DOID:3121     rdfs:subClassOf  DOID:0060262  _IRI