What is the fourth longest river in Europe?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q46', 'id': 0, 'label': 'Europe'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q40855', 'id': 1, 'label': 'Dnieper'}], 'links': [{'name_': 'P30', 'source': 1, 'target': 0, 'label': 'continent'}]}
The Dnieper is a river in Europe.
Dnieper is a dish from the region of Europe .
What is the fourth longest river in Europe?</s>The [unused1]Dnieper                [unused2] is a river in Europe.
What is the fourth longest river in Europe?</s>The Dnieper is a river in Europe.
What is the fourth longest river in Europe?</s> [unused1]Dnieper                [unused2] is a dish from the region of Europe .
What is the fourth longest river in Europe?</s>Dnieper is a dish from the region of Europe .
What is the fourth longest river in Europe?</s>Europe,0,Europe,Europe,0,[unused1]Dnieper[unused2],[unused1]Dnieper[unused2],continent,Europe,[unused1]Dnieper[unused2],0,[unused1]Dnieper[unused2]
What is the fourth longest river in Europe?</s>Europe,0,Europe,Europe,0,Dnieper,Dnieper,continent,Europe,Dnieper,0,Dnieper