Question: who lives the longest in the united states
[{'answer': 'Summit County , Colorado', 'provenance': [{'wikipedia_id': '54696414', 'title': 'List of U.S. counties with longest life expectancy', 'start_paragraph_id': 4, 'start_character': 111, 'end_paragraph_id': 4, 'end_character': 135, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]