Question: who won the cheltenham gold cup the most times
[{'answer': 'Golden Miller', 'provenance': [{'wikipedia_id': '875253', 'title': 'Cheltenham Gold Cup', 'start_paragraph_id': 2, 'start_character': 264, 'end_paragraph_id': 2, 'end_character': 277, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]