Question: when did hurricane ivan hit the cayman islands
[{'answer': 'September 11', 'provenance': [{'wikipedia_id': '961346', 'title': 'Hurricane Ivan', 'start_paragraph_id': 5, 'start_character': 149, 'end_paragraph_id': 5, 'end_character': 161, 'bleu_score': 1.0, 'section': 'Section::::Meteorological history.\n'}]}, {'provenance': [{'wikipedia_id': '961346', 'title': 'Hurricane Ivan', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 614, 'bleu_score': 0.793209711164905, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3637382514211839844}, 'section': 'Section::::Meteorological history.\n'}]}]