Question: who won the nba finals the last 10 years
[{'answer': 'Golden State Warriors'}, {'answer': 'Cleveland Cavaliers'}, {'answer': 'San Antonio Spurs'}, {'answer': 'Miami Heat'}, {'answer': 'Dallas Mavericks'}, {'answer': 'Los Angeles Lakers', 'provenance': [{'wikipedia_id': '16795291', 'title': 'List of NBA champions', 'start_paragraph_id': 3, 'start_character': 407, 'end_paragraph_id': 3, 'end_character': 425, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]