Question: who won the mlb world series in 2015
[{'answer': 'Royals', 'provenance': [{'wikipedia_id': '40627800', 'title': '2015 World Series', 'start_paragraph_id': 1, 'start_character': 272, 'end_paragraph_id': 1, 'end_character': 278, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '40627800', 'title': '2015 World Series', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 579, 'bleu_score': 0.9817332376369081, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17351579574599910247}, 'section': 'Section::::Abstract.'}]}]