Question: who was the first african american woman elected to congress
[{'answer': 'Shirley Anita Chisholm', 'provenance': [{'wikipedia_id': '567269', 'title': 'Shirley Chisholm', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '567269', 'title': 'Shirley Chisholm', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 478, 'bleu_score': 0.9208977726789741, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18006871531064478299}, 'section': 'Section::::Abstract.'}]}]