Question: What year did Larry McMurtry's screenplay adaptation about the complex emotional and homosexual relationship between Ennis Del Mar and Jack Twist in the American West from 1963 to 1983 win him an oscar?
Sentence (from "Jack Twist"): Jack's story is depicted by the complex, sexual, and romantic relationship he has with Ennis Del Mar in the American West from 1963 to 1983.
Relevant evidence: No