Question: how many admirals does the us navy have
[{'answer': '6 four - star', 'provenance': [{'wikipedia_id': '2385768', 'title': 'Admiral (United States)', 'start_paragraph_id': 13, 'start_character': 404, 'end_paragraph_id': 13, 'end_character': 420, 'bleu_score': 1.0, 'section': 'Section::::Statutory limits.\n'}]}, {'provenance': [{'wikipedia_id': '2385768', 'title': 'Admiral (United States)', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 429, 'bleu_score': 0.976327165973018, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9461696271546260986}, 'section': 'Section::::Statutory limits.\n'}]}]