What is the longest river in the world?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q4022', 'id': 0, 'label': 'river'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q3392', 'id': 1, 'label': 'Nile'}], 'links': [{'name_': 'P1889', 'source': 0, 'target': 0, 'label': 'different from'}, {'name_': 'P31', 'source': 1, 'target': 0, 'label': 'instance of'}]}
The Nile is a river, but it is different from the Ganges.
The river Nile is a variation of the river .
What is the longest river in the world?</s>The [unused1]Nile                [unused2] is a river, but it is different from the Ganges.
What is the longest river in the world?</s>The Nile is a river, but it is different from the Ganges.
What is the longest river in the world?</s>The river [unused1]Nile                [unused2] is a variation of the river .
What is the longest river in the world?</s>The river Nile is a variation of the river .
What is the longest river in the world?</s>river,different from,river,river,0,[unused1]Nile[unused2],[unused1]Nile[unused2],instance of,river,[unused1]Nile[unused2],0,[unused1]Nile[unused2]
What is the longest river in the world?</s>river,different from,river,river,0,Nile,Nile,instance of,river,Nile,0,Nile