Question: what two bodies of water does the erie canal link together
[{'answer': 'Hudson River', 'provenance': [{'wikipedia_id': '10046', 'title': 'Erie Canal', 'start_paragraph_id': 1, 'start_character': 236, 'end_paragraph_id': 1, 'end_character': 248, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Niagara River', 'provenance': [{'wikipedia_id': '10046', 'title': 'Erie Canal', 'start_paragraph_id': 40, 'start_character': 61, 'end_paragraph_id': 40, 'end_character': 74, 'bleu_score': 1.0, 'section': 'Section::::Construction.\n'}]}]