Question: in which countries is russian the official language
[{'answer': 'Russia', 'provenance': [{'wikipedia_id': '15531775', 'title': 'List of territorial entities where Russian is an official language', 'start_paragraph_id': 0, 'start_character': 35, 'end_paragraph_id': 0, 'end_character': 41, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Belarus'}, {'answer': 'Kazakhstan'}, {'answer': 'Kyrgyzstan'}]