Question: What is the date of death of the composer of film Mamta (1966 Film)?
Sentence (from "Mamta (1966 film)"): Mamta is a 1966 Indian drama film, directed by Asit Sen, written by Nihar Ranjan Gupta and Krishan Chander, and with music composed by Roshan and written by Majrooh Sultanpuri.
Relevant evidence: Yes