CREATE TABLE table_7562 ("1st built" FLOAT, "1913 Class" TEXT, "W.A." TEXT, "No. Built" FLOAT, "Builder" TEXT, "Date" TEXT, "LNER Class" TEXT)

What is the 1913 class of locomotive that has a 1st built value under 494 and WA of 4-4-0t?
SELECT "1913 Class" FROM table_7562 WHERE "1st built" < '494' AND "W.A." = '4-4-0t'
SELECT "1913 Class" FROM "table_7562" WHERE "1st built" < '494' AND "W.A." = '4-4-0t'