Question: What is the date of death of the performer of song California Zephyr (Hank Williams Song)?
Sentence (from "Hank Williams"): The Pulitzer Prize jury in 2010 awarded him a posthumous special citation "for his craftsmanship as a songwriter who expressed universal feelings with poignant simplicity and played a pivotal role in transforming country music into a major musical and cultural force in American life."
Relevant evidence: No