Which Canadian city is home to the Niagara Falls?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q145', 'id': 0, 'label': 'United Kingdom'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q29', 'id': 1, 'label': 'Spain'}, {'type': 'INTERNAL', 'name_': 'Q38', 'id': 2, 'label': 'Italy'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q16', 'id': 3, 'label': 'Canada'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q128133', 'id': 4, 'label': 'Niagara Falls'}, {'type': 'INTERNAL', 'name_': 'Q1754886', 'id': 5, 'label': 'Eaten Alive!'}], 'links': [{'name_': 'P17', 'source': 0, 'target': 0, 'label': 'country'}, {'name_': 'P530', 'source': 0, 'target': 1, 'label': 'diplomatic relation'}, {'name_': 'P530', 'source': 0, 'target': 2, 'label': 'diplomatic relation'}, {'name_': 'P530', 'source': 0, 'target': 3, 'label': 'diplomatic relation'}, {'name_': 'P530', 'source': 2, 'target': 0, 'label': 'diplomatic relation'}, {'name_': 'P530', 'source': 2, 'target': 1, 'label': 'diplomatic relation'}, {'name_': 'P17', 'source': 2, 'target': 2, 'label': 'country'}, {'name_': 'P530', 'source': 2, 'target': 3, 'label': 'diplomatic relation'}, {'name_': 'P495', 'source': 5, 'target': 2, 'label': 'country of origin'}, {'name_': 'P915', 'source': 5, 'target': 4, 'label': 'filming location'}]}