Question: who won the espy for best nba player
[{'answer': 'LeBron James', 'provenance': [{'wikipedia_id': '10525442', 'title': 'Best NBA Player ESPY Award', 'start_paragraph_id': 3, 'start_character': 376, 'end_paragraph_id': 3, 'end_character': 388, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]