Question: who won last year’s timico cheltenham gold cup
[{'answer': 'Sizing John', 'provenance': [{'wikipedia_id': '53335006', 'title': '2017 Cheltenham Gold Cup', 'start_paragraph_id': 1, 'start_character': 227, 'end_paragraph_id': 1, 'end_character': 238, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '53335006', 'title': '2017 Cheltenham Gold Cup', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 428, 'bleu_score': 0.97451705556073, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5017368245930511718}, 'section': 'Section::::Abstract.'}]}]