Question: who was the first african american to run for president of the united states
[{'answer': 'Shirley Chisholm', 'provenance': [{'wikipedia_id': '21291394', 'title': 'African-American candidates for President of the United States', 'start_paragraph_id': 11, 'start_character': 11, 'end_paragraph_id': 11, 'end_character': 27, 'bleu_score': 1.0, 'section': 'Section::::History.:George Edwin Taylor.\n'}]}, {'provenance': [{'wikipedia_id': '21291394', 'title': 'African-American candidates for President of the United States', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 416, 'bleu_score': 0.9684940092844061, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3350096293263357290}, 'section': 'Section::::History.:Shirley Chisholm.\n'}]}]