CREATE TABLE table_19988 ("Round" FLOAT, "Date" TEXT, "Grand Prix" TEXT, "Circuit" TEXT, "125cc winner" TEXT, "250cc winner" TEXT, "MotoGP winner" TEXT, "Report" TEXT)

in round 9 who was the 250cc winner?
SELECT "250cc winner" FROM table_19988 WHERE "Round" = '9'
SELECT "250cc winner" FROM "table_19988" WHERE "Round" = '9'