Question:  Dharmatama is a 1975 Hindi thriller movie and the first Bollywood film to be shot in which country, the title character was based on Ratan Khatri, Matka gambling is a form of lottery which originally involved betting on the opening and closing rates of cotton transmitted from the New York Cotton Exchange?
Sentence (from "Dharmatma"): It is said that Khan sat down with Khatri to learn more about him and understand the nuances of matka.
Relevant evidence: No