Question: which amendment separated the vote for president and vice president
[{'answer': 'The Twelfth Amendment', 'provenance': [{'wikipedia_id': '31664', 'title': 'Twelfth Amendment to the United States Constitution', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '31664', 'title': 'Twelfth Amendment to the United States Constitution', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 504, 'bleu_score': 0.567175618352589, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18222851316069848292}, 'section': 'Section::::Abstract.'}]}]