user: Question: What is the ICAO for Denmark, and the IATA is BLL?
Columns: ['City', 'Country', 'IATA', 'ICAO', 'Airport']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Aalborg', 'Denmark', 'AAL', 'EKYT', 'Aalborg Airport']
SQL:

assistant: SELECT "ICAO" FROM "Table" WHERE "Country" = 'Denmark' AND "IATA" = 'BLL';