Who built the first successful airplane?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q197', 'id': 0, 'label': 'airplane'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q131123', 'id': 1, 'label': 'air pollution'}], 'links': [{'name_': 'P1542', 'source': 0, 'target': 1, 'label': 'has effect'}]}
Airplanes have an effect on air pollution.
An aircraft has an impact on air pollution .
Who built the first successful airplane?</s>Airplanes have an effect on [unused1]air pollution                [unused2] .
Who built the first successful airplane?</s>Airplanes have an effect on air pollution.
Who built the first successful airplane?</s>An aircraft has an impact on [unused1]air pollution                [unused2] .
Who built the first successful airplane?</s>An aircraft has an impact on air pollution .
Who built the first successful airplane?</s>airplane,0,airplane,airplane,has effect,[unused1]air pollution[unused2],[unused1]air pollution[unused2],0,airplane,[unused1]air pollution[unused2],0,[unused1]air pollution[unused2]
Who built the first successful airplane?</s>airplane,0,airplane,airplane,has effect,air pollution,air pollution,0,airplane,air pollution,0,air pollution