Question: who has won the triple crown of motorsport
[{'answer': 'Graham Hill', 'provenance': [{'wikipedia_id': '8031902', 'title': 'Triple Crown of Motorsport', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '8031902', 'title': 'Triple Crown of Motorsport', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 296, 'bleu_score': 0.963949056609222, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13361917498301283192}, 'section': 'Section::::Abstract.'}]}]