CREATE TABLE table_203_152 (id DECIMAL, "province" TEXT, "capital" TEXT, "area  ( km2 ) " DECIMAL, "population" DECIMAL, "density" DECIMAL)

what is the only province with population density under 30 ?
SELECT "province" FROM table_203_152 WHERE "density" < 30
SELECT "province" FROM "table_203_152" WHERE "density" < 30