Question: which branch of government commands the army and navy
[{'answer': 'executive branch', 'provenance': [{'wikipedia_id': '7279897', 'title': 'United States Department of Defense', 'start_paragraph_id': 1, 'start_character': 67, 'end_paragraph_id': 1, 'end_character': 83, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7279897', 'title': 'United States Department of Defense', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 699, 'bleu_score': 0.716068383921172, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7702774654268339834}, 'section': 'Section::::Abstract.'}]}]