Question: what rank is a squad leader in the marines
[{'answer': 'Sergeant', 'provenance': [{'wikipedia_id': '1998423', 'title': 'Squad leader', 'start_paragraph_id': 1, 'start_character': 437, 'end_paragraph_id': 1, 'end_character': 445, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1998423', 'title': 'Squad leader', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 826, 'bleu_score': 0.924149671592795, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6557690276774926786}, 'section': 'Section::::Abstract.'}]}]