Question: how many deaths per year are caused by car accidents
[{'answer': '37,461', 'provenance': [{'wikipedia_id': '2198673', 'title': 'Motor vehicle fatality rate in U.S. by year', 'start_paragraph_id': 2, 'start_character': 89, 'end_paragraph_id': 2, 'end_character': 95, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]