CREATE TABLE table_59631 ("Round" CLOB, "Date" CLOB, "Event" CLOB, "Circuit" CLOB, "Winning Driver" CLOB, "Winning Team" CLOB)

Who was the winning team for circuit zolder?
SELECT "Winning Team" FROM table_59631 WHERE "Circuit" = 'circuit zolder'
SELECT "Winning Team" FROM "table_59631" WHERE "Circuit" = 'circuit zolder'