Complex sentence: Years ago, Sree Kanteerava Stadium was a lake.the sree kanteerva athletic track was developed into a pro synthetic track for 1996 national games it was a cinder track before.
Split into simpler sentences: Years ago, Sree Kanteerava Stadium was a lake. The Sree Kanteerva athletic track was developed into a pro synthetic track for 1996 national games; it was a cinder track before.