Question: What is the highest total cargo of an airport ranked larger than 19 with a code of bkk/vtbs?
SQL: SELECT MAX("Total Cargo (Metric Tonnes)") FROM "2-1451581-6" WHERE "Code (IATA/ICAO)" = 'bkk/vtbs' AND "Rank" > 19.0;

Question: What is the rank of the airport with the BKK/VTBS code?
SQL: SELECT "Rank" FROM "2-1451581-6" WHERE "Code (IATA/ICAO)" = 'BKK/VTBS';