CREATE TABLE table_204_778 (id DECIMAL, "code" DECIMAL, "county" TEXT, "former province" TEXT, "area  ( km2 ) " DECIMAL, "population\ census 2009" DECIMAL, "capital" TEXT)

which county is the only one to have an area less than 1,000 square kilometers ?
SELECT "county" FROM table_204_778 WHERE "area (km2)" < 1000
SELECT "county" FROM "table_204_778" WHERE "area (km2)" < 1000