Question: who led the red army and made it an effective fighting force
[{'answer': 'Marshal Mikhail Tukhachevsky', 'provenance': [{'wikipedia_id': '25682', 'title': 'Red Army', 'start_paragraph_id': 26, 'start_character': 83, 'end_paragraph_id': 26, 'end_character': 111, 'bleu_score': 1.0, 'section': 'Section::::History.:Doctrinal development in the 1920s and 1930s.\n'}]}, {'provenance': [{'wikipedia_id': '25682', 'title': 'Red Army', 'start_paragraph_id': 26, 'start_character': 7, 'end_paragraph_id': 26, 'end_character': 910, 'bleu_score': 0.9028205426096171, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15616611584755470143}, 'section': 'Section::::History.:Doctrinal development in the 1920s and 1930s.\n'}]}]