Question: where did the widest tornado on record occur
[{'answer': 'El Reno , Oklahoma', 'provenance': [{'wikipedia_id': '454078', 'title': 'Tornado records', 'start_paragraph_id': 30, 'start_character': 48, 'end_paragraph_id': 30, 'end_character': 73, 'bleu_score': 1.0, 'section': 'Section::::Largest and most powerful tornadoes.:Largest path width.\n'}]}]