assertion  retraction  graph  subject       predicate          object                datatype    annotation
1          0           graph  DOID:0050806  oio:creation_date  2013-12-02T12:40:57Z  xsd:string  
1          0           graph  DOID:0050805  oio:creation_date  2013-12-02T12:40:57Z  xsd:string  
1          0           graph  DOID:0050804  oio:creation_date  2013-12-02T12:40:57Z  xsd:string  
1          0           graph  DOID:0050803  oio:creation_date  2013-12-02T12:40:57Z  xsd:string