What is the second longest river in Europe?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q46', 'id': 0, 'label': 'Europe'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q1653', 'id': 1, 'label': 'Danube'}], 'links': [{'name_': 'P30', 'source': 1, 'target': 0, 'label': 'continent'}]}
The Danube is a river in Europe.
The Danube is a river in Europe .
What is the second longest river in Europe?</s>The [unused1]Danube                [unused2] is a river in Europe.
What is the second longest river in Europe?</s>The Danube is a river in Europe.
What is the second longest river in Europe?</s>The [unused1]Danube                [unused2] is a river in Europe .
What is the second longest river in Europe?</s>The Danube is a river in Europe .
What is the second longest river in Europe?</s>Europe,0,Europe,Europe,0,[unused1]Danube[unused2],[unused1]Danube[unused2],continent,Europe,[unused1]Danube[unused2],0,[unused1]Danube[unused2]
What is the second longest river in Europe?</s>Europe,0,Europe,Europe,0,Danube,Danube,continent,Europe,Danube,0,Danube