Question: Colonel Walter E. Kurtz,is a fictional character and the main antagonist of Francis Ford Coppola's film "Apocalypse Now" (1979), and portrayed by which American actor, film director and political activist?
Sentence (from "Colonel Kurtz"): Colonel Kurtz is based on the character of a nineteenth-century ivory trader, also called Kurtz, from the novella "Heart of Darkness" (1899) by Joseph Conrad.
Relevant evidence: No