Table: airports_10
Columns: city
province
country
iata
airport

Question: Which city's IATA is nkg?
SQL: SELECT "city" FROM airports_10 WHERE "iata" = 'nkg'

Question: Which airport is in Xinjiang province in the city Kuqa?
SQL: SELECT "airport" FROM airports_10 WHERE "province" = 'xinjiang' AND "city" = 'kuqa'

Question: Which province's IATA is kix?
SQL: SELECT "province" FROM airports_10 WHERE "iata" = 'kix'

Question: Which airport's IATA is pen?
SQL: SELECT "airport" FROM airports_10 WHERE "iata" = 'pen'