Question: when was the burj al arab dubai built
[{'answer': '1999', 'provenance': [{'wikipedia_id': '538922', 'title': 'Burj Al Arab', 'start_paragraph_id': 7, 'start_character': 32, 'end_paragraph_id': 7, 'end_character': 36, 'bleu_score': 1.0, 'section': 'Section::::Design and construction.\n'}]}, {'provenance': [{'wikipedia_id': '538922', 'title': 'Burj Al Arab', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 36, 'bleu_score': 0.6803749333171201, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 275535354979079820}, 'section': 'Section::::Design and construction.\n'}]}]