assertion  retraction  graph  subject   predicate      object        datatype    annotation
1          0           graph  DOID:219  oio:hasDbXref  MESH:D003110  xsd:string  
1          0           graph  DOID:235  oio:hasDbXref  MESH:D003110  xsd:string  
1          0           graph  DOID:234  oio:hasDbXref  MESH:D003110  xsd:string