CREATE TABLE table_56550 ("Year" TEXT, "Type" TEXT, "Nos." TEXT, "GSWR Class" FLOAT, "GSWR Nos." TEXT, "GSR Class" TEXT, "Inchicore Class" TEXT, "Withdrawn" TEXT)

What is withdrawn with a GSR Class of 296?
SELECT "Withdrawn" FROM table_56550 WHERE "GSR Class" = '296'
SELECT "Withdrawn" FROM "table_56550" WHERE "GSR Class" = '296'