Complex sentence: Commodore B K Mohanti, who took the initiative to restore the memorial, was also present during an initiative by Indian National Trust for Art & Cultural Heritage (Intach) to popularise lesser known monuments in Kolkata.
Split into simpler sentences: Commodore B K Mohanti, who took the initiative to restore the memorial, was also present. The event was an initiative by Indian National Trust for Art & Cultural Heritage (INTACH) to popularise lesser known monuments in Kolkata.