Complex sentence: Bogoda became a close associate of Sugathapala De Silva and the members of the drama group and who included members such as Tony Ranasinghe and Simon Navagattegama, were the most noted young theatre artists and peers of Bogoda in the early 60s.
Split into simpler sentences: Bogoda became a close associate of Sugathapala De Silva and members of the drama group. The group included such memebers as Tony Ranasinghe and Simon Navagattegama, were the most noted young theatre artists and peers of Bogoda in the early 60s.