Complex sentence: Sarathi Socio Cultural Trust, a non profit organization in Bangalore founded in 2003, is involved in organizing socio-cultural events in Koramangala, the highlight being the "grand Durga Puja", which sees at least 150,000 to 200,000 visitors every year.
Split into simpler sentences: Sarathi Socio Cultural Trust is a non profit organization in Bangalore founded in 2003. The organization is involved in organizing socio-cultural events in Koramangala, the highlight being the "grand Durga Puja", which sees at least 150,000 to 200,000 visitors every year.