Question: the direct election of senators was established by
[{'answer': 'Seventeenth Amendment', 'provenance': [{'wikipedia_id': '31669', 'title': 'Seventeenth Amendment to the United States Constitution', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '31669', 'title': 'Seventeenth Amendment to the United States Constitution', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 477, 'bleu_score': 0.901583178764161, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 357623716189470156}, 'section': 'Section::::Abstract.'}]}]