Question: what famous african american regiment fought bravely at fort wagner
[{'answer': 'William Carney', 'provenance': [{'wikipedia_id': '239347', 'title': 'Fort Wagner', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::54th Massachusetts.\n'}]}, {'provenance': [{'wikipedia_id': '239347', 'title': 'Fort Wagner', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 477, 'bleu_score': 0.835720078388642, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3824773608056652351}, 'section': 'Section::::54th Massachusetts.\n'}]}]