What is the sixth longest river system in the world?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q166620', 'id': 0, 'label': 'drainage basin'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q285451', 'id': 1, 'label': 'drainage system'}], 'links': [{'name_': 'P527', 'source': 0, 'target': 1, 'label': 'has part(s)'}, {'name_': 'P361', 'source': 1, 'target': 0, 'label': 'part of'}]}
The drainage basin is part of the drainage system.
The drainage system is part of the drainage basin .
What is the sixth longest river system in the world?</s>The [unused1]drainage basin                [unused2] is part of the drainage system.
What is the sixth longest river system in the world?</s>The drainage basin is part of the drainage system.
What is the sixth longest river system in the world?</s>The drainage system is part of the [unused1]drainage basin                [unused2] .
What is the sixth longest river system in the world?</s>The drainage system is part of the drainage basin .
What is the sixth longest river system in the world?</s>[unused1]drainage basin[unused2],0,[unused1]drainage basin[unused2],[unused1]drainage basin[unused2],has part(s),drainage system,drainage system,part of,[unused1]drainage basin[unused2],drainage system,0,drainage system
What is the sixth longest river system in the world?</s>drainage basin,0,drainage basin,drainage basin,has part(s),drainage system,drainage system,part of,drainage basin,drainage system,0,drainage system