Question: what is the longest straight road in the united states
[{'answer': 'Highway 200', 'provenance': [{'wikipedia_id': '17375926', 'title': 'List of longest state highways in the United States', 'start_paragraph_id': 1, 'start_character': 190, 'end_paragraph_id': 1, 'end_character': 201, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]