Table: airport_rankings
Columns: rank
city
airport
passengers
carriers

Question: What is the least passengers from the Dallas/Fort Worth International (DFW) airport?
SQL: SELECT MIN("passengers") FROM airport_rankings WHERE "airport" = 'dallas/fort worth international (dfw)'

Question: What city is ranked greater than 6, and the airport is St. Petersburg/Clearwater (PIE)
SQL: SELECT "city" FROM airport_rankings WHERE "rank" > 6 AND "airport" = 'st. petersburg/clearwater (pie)'