Question: who was the highest-ranking black officer in the u.s. army at the beginning of the first world war
[{'answer': 'Charles Young', 'provenance': [{'wikipedia_id': '981134', 'title': 'Charles Young (United States Army)', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '981134', 'title': 'Charles Young (United States Army)', 'start_paragraph_id': 1, 'start_character': 74, 'end_paragraph_id': 1, 'end_character': 388, 'bleu_score': 0.7058972997182451, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9884466072516239552}, 'section': 'Section::::Abstract.'}]}]