What is the 4th largest where the 2nd largest is Minab?
CREATE TABLE "largest_cities_in_the_provinces" (
  "province" text,
  "largest_city" text,
  "2nd_largest" text,
  "3rd_largest" text,
  "4th_largest" text
);
SELECT "4th_largest" FROM "largest_cities_in_the_provinces" WHERE "2nd_largest"='minab';