What district was the city with an area smaller than 12 square kilometers and a serial number of 35?
CREATE TABLE "punjab" (
  "serial_no" real,
  "district" text,
  "headquartered_city" text,
  "city_population_2009" real,
  "city_area_km_2" real
);
SELECT "district" FROM "punjab" WHERE "city_area_km_2"<12 AND "serial_no"=35;