Question: What groundbreaking composer is the actor who plays Schwerner in Murder in Mississippi, best known for portraying?
Sentence (from "James Young (mayor)"): His election was especially noted as he is the first African-American mayor of the city, which was previously best known for the murders of Chaney, Goodman, and Schwerner by members of the Ku Klux Klan in 1964.
Relevant evidence: No