CREATE TABLE table_203_154 (id NUMBER, "type" CLOB, "manufacturer" CLOB, "numbers" CLOB, "year built" NUMBER, "quantity built" NUMBER, "power  ( horsepower ) " NUMBER, "max speed  ( km/h ) " NUMBER, "note" CLOB)

which train has the least speed ?
SELECT "type" FROM table_203_154 ORDER BY "max speed (km/h)" LIMIT 1
SELECT "type" FROM "table_203_154" ORDER BY "max speed (km/h)" FETCH FIRST 1 ROWS ONLY