user: Question: Which airport's IATA is PEN?
Columns: ['City', 'Province', 'Country', 'IATA', 'Airport']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Aksu', 'Xinjiang', 'China', 'AKU', 'Aksu Airport']
SQL:

assistant: SELECT "Airport" FROM "Table" WHERE "IATA" = 'PEN';