Table: airport_cargo_4
Columns: rank
airport
location
code_iata
total_cargo_metric_tonnes
2003_rank
change

Question: What is the % Change at London Heathrow airport?
SQL: SELECT "change" FROM airport_cargo_4 WHERE "airport" = 'london heathrow airport'

Question: What 2003 rank does the airport IATA code SIN have?
SQL: SELECT "2003_rank" FROM airport_cargo_4 WHERE "code_iata" = 'sin'

Question: Which airport has an IATA code of AMS?
SQL: SELECT "airport" FROM airport_cargo_4 WHERE "code_iata" = 'ams'

Question: What is the IATA code of the airport that has a Total Cargo of 1,838,894 Metric Tonnes?
SQL: SELECT "code_iata" FROM airport_cargo_4 WHERE "total_cargo_metric_tonnes" = '1,838,894'

Question: What is the 2003 rank for Los Angeles International airport?
SQL: SELECT "2003_rank" FROM airport_cargo_4 WHERE "airport" = 'los angeles international airport'

Question: What % Change is listed against the airport with a rank less than 8 and a 2003 rank of 6?
SQL: SELECT "change" FROM airport_cargo_4 WHERE "rank" < 8 AND "2003_rank" = '6'