Question: the ufa city where annual brics summit-2015 is scheduled to be held is in which country
[{'answer': 'Russia', 'provenance': [{'wikipedia_id': '43302097', 'title': '7th BRICS summit', 'start_paragraph_id': 1, 'start_character': 145, 'end_paragraph_id': 1, 'end_character': 151, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]