Complex sentence: Actor Kamal Hassan was the patron for Sangarsh'11.Oscar winning Music Director A.R.Rahman was the patron of Sangarsh'12.Veteran Actor Prakash Raj and Actor Srikanth were the patrons for Sangarsh'13.
Split into simpler sentences: Actor Kamal Hassan was the patron for Sangarsh'11.Oscar winning Music Director A.R.Rahman was the patron of Sangarsh'12. Veteran actor Prakash Raj and actor Srikanth were the patrons for Sangarsh'13.