Complex sentence: The stadium was home to Gombak United FC in the S-league before they left the S-league in the year 2002 and the stadium was converted to a Centre of Excellence for the Singapore Athletic Association.
Split into simpler sentences: The stadium was home to Gombak United FC in the S-league before they left the S-league in the year 2002. Thereafter, the stadium was converted to a Centre of Excellence for the Singapore Athletic Association.