Complex sentence: Weerasinghe has been a significant driving force in the development of Sri Lankan art since the early 1990s and is presently Director of the Postgraduate Institute of Archaeology at the University of Kelaniya.
Split into simpler sentences: Weerasinghe has been a significant driving force in the development of Sri Lankan art since the early 1990s. He is Director of the Postgraduate Institute of Archaeology at the University of Kelaniya.