Question: who was a leader of the mexican revolution that took place in the early twentieth century
[{'answer': 'Francisco I. Madero', 'provenance': [{'wikipedia_id': '145401', 'title': 'Mexican Revolution', 'start_paragraph_id': 1, 'start_character': 583, 'end_paragraph_id': 1, 'end_character': 602, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '145401', 'title': 'Mexican Revolution', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 837, 'bleu_score': 0.8700727023106251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 962663205658777644}, 'section': 'Section::::Abstract.'}]}]