Question: In what year did the historical film drama based on the true story of Charles Horman win The Palme d'Or?
Sentence (from "Missing (1982 film)"): is a 1982 American historical drama film directed by Costa-Gavras and starring Sissy Spacek, Jack Lemmon, Melanie Mayron, John Shea, Janice Rule and Charles Cioffi.
Relevant evidence: Yes