CREATE TABLE table_52998 ("Date" TEXT, "Venue" TEXT, "Score" TEXT, "Result" TEXT, "Competition" TEXT)

Which Competition had a Result of 3-0 and VEnue of Suwon?
SELECT "Competition" FROM table_52998 WHERE "Result" = '3-0' AND "Venue" = 'suwon'
SELECT "Competition" FROM "table_52998" WHERE "Result" = '3-0' AND "Venue" = 'suwon'