Question: how many terminals are there in dubai airport
[{'answer': 'three', 'provenance': [{'wikipedia_id': '154742', 'title': 'Dubai International Airport', 'start_paragraph_id': 13, 'start_character': 60, 'end_paragraph_id': 13, 'end_character': 65, 'bleu_score': 1.0, 'section': 'Section::::History.:Construction.\n'}]}, {'provenance': [{'wikipedia_id': '154742', 'title': 'Dubai International Airport', 'start_paragraph_id': 52, 'start_character': 0, 'end_paragraph_id': 52, 'end_character': 331, 'bleu_score': 0.965203995518735, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6495744648993108506}, 'section': 'Section::::Infrastructure.:Terminals.\n'}]}]