Question: what is the code for san diego airport
[{'answer': 'IATA : SAN'}, {'answer': 'ICAO : KSAN'}, {'answer': 'FAA LID : SAN'}, {'provenance': [{'wikipedia_id': '263650', 'title': 'San Diego International Airport', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 299, 'bleu_score': 0.714486186122669, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13079124130548671098}, 'section': 'Section::::Abstract.'}]}]