Question: What date was introduced where it was withdrawn 1955?
SQL: SELECT "Introduced" FROM "2-1181375-1" WHERE "Withdrawn" = '1955';

Question: What engine was introduced in 1935?
SQL: SELECT "Engine" FROM "2-1181375-1" WHERE "Introduced" = '1935';

Question: What is the number range for the Gloucester RCW builder introduced in 1937?
SQL: SELECT "Number Range" FROM "2-1181375-1" WHERE "Builder" = 'Gloucester RCW' AND "Introduced" = '1937';