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

which commune has the least number of inhabitants ?
SELECT "city" FROM table_203_413 ORDER BY "population" LIMIT 1
SELECT "city" FROM "table_203_413" ORDER BY "population" NULLS FIRST LIMIT 1