Question: what breed of dog has won the most best in show crufts
[{'answer': 'English Cocker Spaniel', 'provenance': [{'wikipedia_id': '25603919', 'title': 'List of Best in Show winners of Crufts', 'start_paragraph_id': 4, 'start_character': 91, 'end_paragraph_id': 4, 'end_character': 113, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25603919', 'title': 'List of Best in Show winners of Crufts', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 927, 'bleu_score': 0.9587630656151681, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11693758516140116539}, 'section': 'Section::::Abstract.'}]}]