CREATE TABLE table_203_471 (id NUMBER, "#" NUMBER, "date" CLOB, "opponent" CLOB, "score" CLOB, "site/stadium" CLOB, "win" CLOB, "loss" CLOB, "save" CLOB, "attendance" NUMBER, "overall record" CLOB, "ncaat record" CLOB)

which opponent had the highest attendance after north carolina on june 21 ?
SELECT "opponent" FROM table_203_471 WHERE "date" > (SELECT "date" FROM table_203_471 WHERE "date" = 'june 21') ORDER BY "attendance" DESC LIMIT 1
SELECT "opponent" FROM "table_203_471" WHERE "date" > (SELECT "date" FROM "table_203_471" WHERE "date" = 'june 21') ORDER BY "attendance" DESC FETCH FIRST 1 ROWS ONLY