Question: what was the date of the russian revolution
[{'answer': '1917', 'provenance': [{'wikipedia_id': '25762', 'title': 'Russian Revolution', 'start_paragraph_id': 7, 'start_character': 109, 'end_paragraph_id': 7, 'end_character': 113, 'bleu_score': 1.0, 'section': 'Section::::Background.\n'}]}]