Question: who did the warriors play in the 2015 nba finals
[{'answer': 'Cleveland Cavaliers', 'provenance': [{'wikipedia_id': '42553657', 'title': '2015 NBA Finals', 'start_paragraph_id': 1, 'start_character': 255, 'end_paragraph_id': 1, 'end_character': 274, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '42553657', 'title': '2015 NBA Finals', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 598, 'bleu_score': 0.8719702984506641, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14969420557910720411}, 'section': 'Section::::Abstract.'}]}]