Question: who is commander chief of the us military
[{'answer': 'the President', 'provenance': [{'wikipedia_id': '254428', 'title': 'Commander-in-chief', 'start_paragraph_id': 12, 'start_character': 46, 'end_paragraph_id': 12, 'end_character': 59, 'bleu_score': 1.0, 'section': 'Section::::Heads of state as commanders-in-chief.:Afghanistan.\n'}]}]