Table: helitours_airports
Columns: city
country
iata
icao
airport

Question: For an IATA of MLE, what is the ICAO?
SQL: SELECT "icao" FROM helitours_airports WHERE "iata" = 'mle'

Question: For an ICAO of VCCT, what is the IATA?
SQL: SELECT "iata" FROM helitours_airports WHERE "icao" = 'vcct'

Question: Which city has an ICAO of VCCJ?
SQL: SELECT "city" FROM helitours_airports WHERE "icao" = 'vccj'

Question: Which ICAO is found in Vavuniya?
SQL: SELECT "icao" FROM helitours_airports WHERE "city" = 'vavuniya'

Question: Which country has Weerawila Airport?
SQL: SELECT "country" FROM helitours_airports WHERE "airport" = 'weerawila airport'