Question: when did the cubs win the world series
[{'answer': '2016', 'provenance': [{'wikipedia_id': '46779328', 'title': '2016 World Series', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 4, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '46779328', 'title': '2016 World Series', 'start_paragraph_id': 1, 'start_character': 142, 'end_paragraph_id': 1, 'end_character': 735, 'bleu_score': 0.659461454213475, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16620186992321587170}, 'section': 'Section::::Abstract.'}]}]