assertion  retraction  graph  subject    predicate        object     datatype    annotation
1          0           graph  DOID:8186  rdfs:subClassOf  DOID:2025  _IRI        
1          0           graph  DOID:2025  oio:id           DOID:2025  xsd:string  
1          0           graph  DOID:2024  rdfs:subClassOf  DOID:2025  _IRI        
1          0           graph  DOID:8187  rdfs:subClassOf  DOID:2025  _IRI