Question: Of the bothers featured in the 2014 American true crime sports drama film produced by Bennett Miller, which was a seven-time World and Olympic medalist?
Sentence (from "Foxcatcher"): The film's plot is loosely based on the events surrounding multimillionaire Du Pont family heir and wrestling enthusiast John du Pont's 1986 recruitment of 1984 U.S. Olympic gold medalist brothers Mark (Freestyle Wrestling - 82 kg) and Dave Schultz (Freestyle Wrestling - 74 kg) to help coach U.S. wrestlers for participation in national, world, and Olympic competition, and the subsequent murder of Dave by John du Pont in January 1996.
Relevant evidence: Yes