Question: name the first african american woman to receive a dental degree in the united states
[{'answer': 'Ida Gray Nelson Rollins', 'provenance': [{'wikipedia_id': '33130172', 'title': 'Women in dentistry in the United States', 'start_paragraph_id': 7, 'start_character': 18, 'end_paragraph_id': 7, 'end_character': 41, 'bleu_score': 1.0, 'section': 'Section::::Timeline.\n'}]}, {'provenance': [{'wikipedia_id': '33130172', 'title': 'Women in dentistry in the United States', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 176, 'bleu_score': 0.929712191543383, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5317205293468871589}, 'section': 'Section::::Timeline.\n'}]}]