Question: who did the warriors play in the finals last year
[{'answer': 'Cleveland Cavaliers', 'provenance': [{'wikipedia_id': '50010236', 'title': '2017 NBA Finals', 'start_paragraph_id': 1, 'start_character': 273, 'end_paragraph_id': 1, 'end_character': 292, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '50010236', 'title': '2017 NBA Finals', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1063, 'bleu_score': 0.7983042699813521, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 89400995494625370}, 'section': 'Section::::Abstract.'}]}]