Question: when is nathan's hot dog eating contest
[{'answer': 'Independence Day', 'provenance': [{'wikipedia_id': '766904', 'title': "Nathan's Hot Dog Eating Contest", 'start_paragraph_id': 1, 'start_character': 122, 'end_paragraph_id': 1, 'end_character': 138, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '766904', 'title': "Nathan's Hot Dog Eating Contest", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 310, 'bleu_score': 0.962600167205617, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3097263229580713001}, 'section': 'Section::::Abstract.'}]}]