Complex sentence: The Hindu Culture and Heritage Society, a Southall-based organisation, celebrated Ganesh Chaturthi for the first time in London in 2005 at the Vishwa Hindu Temple; the idol was immersed in the River Thames at Putney Pier.
Split into simpler sentences: The Hindu Culture and Heritage Society, a Southall-based organisation, celebrated Ganesh Chaturthi for the first time in London in 2005 at the Vishwa Hindu Temple. The idol was immersed in the River Thames at Putney Pier.