CREATE TABLE table_56718 ("Athlete" TEXT, "Event" TEXT, "Round of 16" TEXT, "Quarterfinal" TEXT, "Semifinal" TEXT, "Final" TEXT)

Hossein Ojaghi participated in what semifinal.
SELECT "Semifinal" FROM table_56718 WHERE "Athlete" = 'hossein ojaghi'
SELECT "Semifinal" FROM "table_56718" WHERE "Athlete" = 'hossein ojaghi'