Question: who did the cubs beat last year in the world series
[{'answer': 'Cleveland Indians', 'provenance': [{'wikipedia_id': '46779328', 'title': '2016 World Series', 'start_paragraph_id': 1, 'start_character': 259, 'end_paragraph_id': 1, 'end_character': 276, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]