CREATE TABLE table_203_413 (id NUMBER, "rank" CLOB, "city" CLOB, "population" NUMBER, "area\ ( km2 ) " NUMBER, "density\ ( inhabitants/km2 ) " NUMBER, "altitude\ ( mslm ) " NUMBER)

which communes have a population above 30,000 ?
SELECT "city" FROM table_203_413 WHERE "population" > 30000
SELECT "city" FROM "table_203_413" WHERE "population" > 30000