Question: who was in charge of russia during the cold war
[{'answer': 'the Bolsheviks', 'provenance': [{'wikipedia_id': '325329', 'title': 'Cold War', 'start_paragraph_id': 13, 'start_character': 184, 'end_paragraph_id': 13, 'end_character': 198, 'bleu_score': 1.0, 'section': 'Section::::Background.:Russian Revolution.\n'}]}, {'provenance': [{'wikipedia_id': '325329', 'title': 'Cold War', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 657, 'bleu_score': 0.864058218466894, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3800795309975537720}, 'section': 'Section::::Background.:Russian Revolution.\n'}]}]