CREATE TABLE table_14581 ("Type" TEXT, "Fleet numbers" TEXT, "Quantity made" FLOAT, "Manufacturer" TEXT, "Date made" TEXT, "GSWR Class" FLOAT, "GSWR Nos." TEXT, "GSR Class" TEXT, "Inchicore Class" TEXT, "Withdrawn" TEXT)

Who manufactured fleet numbers of wlwr 2, 4, 11?
SELECT "Manufacturer" FROM table_14581 WHERE "Fleet numbers" = 'wlwr 2, 4, 11'
SELECT "Manufacturer" FROM "table_14581" WHERE "Fleet numbers" = 'wlwr 2, 4, 11'