Question: who was the first african american woman to serve in the senate
[{'answer': 'Carol Elizabeth Moseley Braun', 'provenance': [{'wikipedia_id': '186833', 'title': 'Carol Moseley Braun', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 29, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '186833', 'title': 'Carol Moseley Braun', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1006, 'bleu_score': 0.972233322266093, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11675461405600790603}, 'section': 'Section::::Abstract.'}]}]