Question: who has won the russian grand prix 2017
[{'answer': 'Valtteri Bottas', 'provenance': [{'wikipedia_id': '52758496', 'title': '2017 Russian Grand Prix', 'start_paragraph_id': 1, 'start_character': 542, 'end_paragraph_id': 1, 'end_character': 557, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '52758496', 'title': '2017 Russian Grand Prix', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 664, 'bleu_score': 0.8810917712461, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2012159550063343561}, 'section': 'Section::::Abstract.'}]}]