assertion  retraction  graph  subject     predicate        object      datatype    annotation
1          0           graph  DOID:60003  rdfs:subClassOf  DOID:60002  _IRI        
1          0           graph  DOID:60002  oio:id           DOID:60002  xsd:string  
1          0           graph  DOID:6518   rdfs:subClassOf  DOID:60002  _IRI        
1          0           graph  DOID:5382   rdfs:subClassOf  DOID:60002  _IRI