text: Both were convicted in August 1996 of treason , mutiny and corruption ; Chun was sentenced to death , later commuted to life imprisonment , while Roh 's 22 Â 1\/2 - year jail sentence was reduced to 17 years on appeal .
simplified: Chun was sentenced to death , later changed to life imprisonment . Roh 's 22 1\/2 - year jail sentence was reduced to 17 years .