Question: what is the highest enlisted rank in the marine corps
[{'answer': 'sergeant major', 'provenance': [{'wikipedia_id': '582497', 'title': 'Sergeant Major of the Marine Corps', 'start_paragraph_id': 3, 'start_character': 26, 'end_paragraph_id': 3, 'end_character': 40, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '582497', 'title': 'Sergeant Major of the Marine Corps', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 582, 'bleu_score': 0.9792717993254391, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13113905555203654786}, 'section': 'Section::::History.\n'}]}]