CREATE TABLE table_204_789 (id DECIMAL, "plant name" TEXT, "location" TEXT, "country" TEXT, "startup date" DECIMAL, "capacity  ( mmtpa ) " TEXT, "corporation" TEXT)

what is the only country that started up a plant in 2013 ?
SELECT "country" FROM table_204_789 WHERE "startup date" = 2013
SELECT "country" FROM "table_204_789" WHERE "startup date" = 2013