CREATE TABLE table_341 ("Number Range" CLOB, "Introduced" CLOB, "Builder" CLOB, "Engine" CLOB, "Weight  ( long tons ) " CLOB, "Seats" CLOB, "Withdrawn" CLOB, "Notes" CLOB)

what's the engine where builder is gloucester rcw and withdrawn is 1959
SELECT "Engine" FROM table_341 WHERE "Builder" = 'Gloucester RCW' AND "Withdrawn" = '1959'
SELECT "Engine" FROM "table_341" WHERE "Builder" = 'Gloucester RCW' AND "Withdrawn" = '1959'