Question: how many deaths has there been in nascar
[{'answer': '28 driver fatalities', 'provenance': [{'wikipedia_id': '25971183', 'title': 'List of NASCAR fatalities', 'start_paragraph_id': 2, 'start_character': 38, 'end_paragraph_id': 2, 'end_character': 58, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25971183', 'title': 'List of NASCAR fatalities', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 164, 'bleu_score': 0.929712191543383, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11245039233045363635}, 'section': 'Section::::Abstract.'}]}]