assertion  retraction  graph  subject    predicate      object        datatype    annotation
1          0           graph  DOID:3829  oio:hasDbXref  MESH:D010911  xsd:string  
1          0           graph  DOID:4916  oio:hasDbXref  MESH:D010911  xsd:string  
1          0           graph  DOID:1785  oio:hasDbXref  MESH:D010911  xsd:string