Question: how many 4 star generals are there in the us army
[{'answer': '11', 'provenance': [{'wikipedia_id': '5093336', 'title': 'List of active duty United States four-star officers', 'start_paragraph_id': 33, 'start_character': 505, 'end_paragraph_id': 33, 'end_character': 507, 'bleu_score': 1.0, 'section': 'Section::::Retirement.\n'}]}, {'provenance': [{'wikipedia_id': '5093336', 'title': 'List of active duty United States four-star officers', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 446, 'bleu_score': 0.851462825583518, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8844026457622735905}, 'section': 'Section::::Abstract.'}]}]