CREATE TABLE table_38547 ("Res." CLOB, "Record" CLOB, "Opponent" CLOB, "Method" CLOB, "Event" CLOB, "Round" CLOB, "Time" CLOB, "Location" CLOB)

Which event had the opponent of shinya aoki and was at 4:56?
SELECT "Event" FROM table_38547 WHERE "Opponent" = 'shinya aoki' AND "Time" = '4:56'
SELECT "Event" FROM "table_38547" WHERE "Opponent" = 'shinya aoki' AND "Time" = '4:56'