Table: airport_traffic_3
Columns: rank
airport
total_passengers
change_2007_2008
international_passengers
domestic_passengers
transit_passengers
aircraft_movements
freight_metric_tonnes

Question: What is the maximum number of trnsit passeners when the total number of international passengers is 4870184?
SQL: SELECT MAX("transit_passengers") FROM airport_traffic_3 WHERE "international_passengers" = 4870184

Question: What is Edinburgh's airport's freight in metric tonnes?
SQL: SELECT MAX("freight_metric_tonnes") FROM airport_traffic_3 WHERE "airport" = 'Edinburgh'

Question: How many different total number of transit passengers are there in London Luton?
SQL: SELECT COUNT("transit_passengers") FROM airport_traffic_3 WHERE "airport" = 'London Luton'

Question: What are the total freights in metric tonnes when the total transit passengers is 147791?
SQL: SELECT "freight_metric_tonnes" FROM airport_traffic_3 WHERE "transit_passengers" = 147791

Question: What is the total number of passengers of the airport ranked 15?
SQL: SELECT "international_passengers" FROM airport_traffic_3 WHERE "rank" = 15