Question: In what year was the film Dersu Uzala produced? 
Sentence (from "Dersu Uzala (1975 film)"): The film is based on the 1923 memoir "Dersu Uzala" (which took its name from the native trapper) by Russian explorer Vladimir Arsenyev, about his exploration of the Sikhote-Alin region of the Russian Far East over the course of multiple expeditions in the early 20th century.
Relevant evidence: No