Question: what car company has the most nascar wins
[{'answer': 'Chevrolet', 'provenance': [{'wikipedia_id': '4653138', 'title': "List of NASCAR Manufacturers' champions", 'start_paragraph_id': 3, 'start_character': 100, 'end_paragraph_id': 3, 'end_character': 109, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4653138', 'title': "List of NASCAR Manufacturers' champions", 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 206, 'bleu_score': 0.89075418420927, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13014190138919072865}, 'section': 'Section::::Abstract.'}]}]