Question: who is the chairman of bank of america
[{'answer': 'Brian Thomas Moynihan', 'provenance': [{'wikipedia_id': '25462619', 'title': 'Brian Moynihan', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25462619', 'title': 'Brian Moynihan', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 196, 'bleu_score': 0.791537399130509, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8401019647293301183}, 'section': 'Section::::Abstract.'}]}]