CREATE TABLE table_850 ("Rnd" FLOAT, "Circuit" TEXT, "GTO Winning Team" TEXT, "GTU Winning Team" TEXT, "TO Winning Team" TEXT, "TU Winning Team" TEXT, "Results" TEXT)

Who was the GTU winning team when the TO winning team was Steve Ross?
SELECT "GTU Winning Team" FROM table_850 WHERE "TO Winning Team" = 'Steve Ross'
SELECT "GTU Winning Team" FROM "table_850" WHERE "TO Winning Team" = 'Steve Ross'