Question: how many miles is the le mans track
[{'answer': '8.467 mi'}, {'provenance': [{'wikipedia_id': '1401596', 'title': '24 Hours of Le Mans', 'start_paragraph_id': 46, 'start_character': 0, 'end_paragraph_id': 46, 'end_character': 954, 'bleu_score': 0.8761785887870651, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5491096058920055083}, 'section': 'Section::::Circuit.\n'}]}]