Question: who has won the most iron chef america
[{'answer': 'Bobby Flay', 'provenance': [{'wikipedia_id': '1395063', 'title': 'Iron Chef America', 'start_paragraph_id': 5, 'start_character': 138, 'end_paragraph_id': 5, 'end_character': 148, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]