user: Question: What is the ICAO of Nakashibetsu?
Columns: ['City', 'Province/Region', 'Country', 'IATA', 'ICAO', 'Airport']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Hachijōjima', 'Kantō', 'Japan', 'HAC', 'RJTH', 'Hachijojima Airport']
SQL:

assistant: SELECT "ICAO" FROM "Table" WHERE "City" = 'Nakashibetsu';