CREATE TABLE "world" (
  "rank" real,
  "city_1" text,
  "city_2" text,
  "2012_passengers_in_millions" real,
  "2011_passengers_in_millions" text,
  "distance" text
);

Question: What is the number of 2011 passengers in millions that have traveled a distance of 1271km?
SQL: SELECT "2011_passengers_in_millions" FROM "world" 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 "world" 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 "world" WHERE "2012_passengers_in_millions"<8.211 AND "distance"='1075km';