Question: which of the great lakes flows into niagara falls
[{'answer': 'Lake Erie', 'provenance': [{'wikipedia_id': '52028', 'title': 'Niagara Falls', 'start_paragraph_id': 2, 'start_character': 43, 'end_paragraph_id': 2, 'end_character': 52, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '52028', 'title': 'Niagara Falls', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 794, 'bleu_score': 0.8167992360748001, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12676967958975797046}, 'section': 'Section::::Characteristics.\n'}]}]