Complex sentence: Built in 2002 and formerly a sport-orientated multipurpose hall where the cadets were taught tae-kwon-do and Silat, in 2009 it was converted into a lecture/academic hall with capacity for 500 student desks.
Split into simpler sentences: Built in 2002 and formerly a sport-orientated multipurpose hall where the cadets were taught taekwondo and silat. In 2009 it was converted into a lecture/academic hall with capacity for 500 student desks.