Question: what is the most costliest hurricane in us history
[{'answer': 'Harvey', 'provenance': [{'wikipedia_id': '19082786', 'title': 'List of costliest Atlantic hurricanes', 'start_paragraph_id': 1, 'start_character': 893, 'end_paragraph_id': 1, 'end_character': 899, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19082786', 'title': 'List of costliest Atlantic hurricanes', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 969, 'bleu_score': 0.6348331680596141, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 409767756384861867}, 'section': 'Section::::Abstract.'}]}]