Question: when was the last category 5 hurricane to hit the united states
[{'answer': '2017', 'provenance': [{'wikipedia_id': '2588836', 'title': 'List of Category 5 Atlantic hurricanes', 'start_paragraph_id': 2, 'start_character': 54, 'end_paragraph_id': 2, 'end_character': 58, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2588836', 'title': 'List of Category 5 Atlantic hurricanes', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 248, 'bleu_score': 0.803443283072738, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 445887213582017943}, 'section': 'Section::::Abstract.'}]}]