CREATE TABLE table_52004 ("Number & Name" TEXT, "Description" TEXT, "Livery" TEXT, "Owner ( s ) " TEXT, "Date" FLOAT)

What livery was worn on the date before 1936, with the description of Gresley RF?
SELECT "Livery" FROM table_52004 WHERE "Date" < '1936' AND "Description" = 'gresley rf'
SELECT "Livery" FROM "table_52004" WHERE "Date" < '1936' AND "Description" = 'gresley rf'