Question: What is the date of birth of the director of film Bibar?
Sentence (from "Bibar"): Bibar (pronounced) is a 2006 Indian Bengali film directed by Subrata Sen starring Subrat Dutta, Tannishtha Chatterjee, Payel Sarkar, Sabyasachi Chakrabarty, Kunal Mitra, Shiladitya Patranabis, Pradip Mukherjee, Anuradha Ray, Kanchan Mullick, Rajesh Sharma, Dulal Lahiri, Biswajit Chakraborty, Oindrilla Khan, and Rita Bhimani.
Relevant evidence: Yes