Question: Why did the director of film Shob Charitro Kalponik die?
Sentence (from "Shob Charitro Kalponik"): Sob Charitro Kalponik, ("All Characters are Imaginary," also known as "Afterword") is a 2009 Bengali film by Rituparno Ghosh starring Bipasha Basu and Prosenjit Chatterjee.
Relevant evidence: Yes