Question: who won the nba mvp of the league
[{'answer': 'Russell Westbrook', 'provenance': [{'wikipedia_id': '631870', 'title': 'NBA Most Valuable Player Award', 'start_paragraph_id': 4, 'start_character': 394, 'end_paragraph_id': 4, 'end_character': 411, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]