user: Question: What is the ICAO when the IATA shows CTS?
Columns: ['City', 'Country', 'IATA', 'ICAO', 'Airport']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Seoul', 'South Korea', 'ICN', 'RKSI', 'Incheon International Airport']
SQL:

assistant: SELECT "ICAO" FROM "Table" WHERE "IATA" = 'CTS';