Table: airport_cargo
Columns: rank
airport
code_iata_icao
total_cargo_metric_tonnes
change

Question: How many ranks have a Code (IATA/ICAO) of ord/kord?
SQL: SELECT COUNT("rank") FROM airport_cargo WHERE "code_iata_icao" = 'ord/kord'

Question: Which Total Cargo (Metric Tonnes) is the highest one that has a Rank smaller than 4, and an Airport of shanghai pudong international airport?
SQL: SELECT MAX("total_cargo_metric_tonnes") FROM airport_cargo WHERE "rank" < 4 AND "airport" = 'shanghai pudong international airport'