Table: air_routes
Columns: rank
city_1
city_2
2012_passengers_in_millions
2011_passengers_in_millions
distance

Question: What is the number of 2011 passengers in millions that have traveled a distance of 1271km?
SQL: SELECT "2011_passengers_in_millions" FROM air_routes WHERE "distance" = '1271km'

Question: What is the number of 2012 passengers in millions that have traveled a distance of 1075km?
SQL: SELECT COUNT("2012_passengers_in_millions") FROM air_routes WHERE "distance" = '1075km'

Question: What is the City 1 that has less than 8.211 million passengers and traveled 1075km in distance?
SQL: SELECT "city_1" FROM air_routes WHERE "2012_passengers_in_millions" < 8.211 AND "distance" = '1075km'