CREATE TABLE table_55659 ("Player" TEXT, "Pos." TEXT, "From" FLOAT, "School/Country" TEXT, "Rebs" FLOAT, "Asts" FLOAT)

What's the total of rebs for UCLA after 1973?
SELECT COUNT("Rebs") FROM table_55659 WHERE "School/Country" = 'ucla' AND "From" > '1973'
SELECT COUNT("Rebs") FROM "table_55659" WHERE "From" > '1973' AND "School/Country" = 'ucla'