Question: who said power comes from the barrel of a gun
[{'answer': 'Mao Zedong', 'provenance': [{'wikipedia_id': '31968224', 'title': 'Political power grows out of the barrel of a gun', 'start_paragraph_id': 1, 'start_character': 109, 'end_paragraph_id': 1, 'end_character': 119, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]