assertion  retraction  graph  subject       predicate        object        datatype    annotation
1          0           graph  DOID:0060100  oio:id           DOID:0060100  xsd:string  
1          0           graph  DOID:201      rdfs:subClassOf  DOID:0060100  _IRI        
1          0           graph  DOID:4045     rdfs:subClassOf  DOID:0060100  _IRI