Question: moscow is the capital city of which country
[{'answer': 'Russia', 'provenance': [{'wikipedia_id': '19004', 'title': 'Moscow', 'start_paragraph_id': 1, 'start_character': 55, 'end_paragraph_id': 1, 'end_character': 61, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]