Question: when completed in 2009 in which city would you find the world's tallest hotel
[{'answer': 'Dubai', 'provenance': [{'wikipedia_id': '23569712', 'title': "History of the world's tallest buildings", 'start_paragraph_id': 39, 'start_character': 397, 'end_paragraph_id': 39, 'end_character': 402, 'bleu_score': 1.0, 'section': 'Section::::Increment in usage of skyscrapers.\n'}]}]