Question: The album "Greatest Hits" by Crosby, Stills & Nash was dedicated to what Rock and Roll Hall of Fame inductee?
Sentence (from "Cass Elliot"): Cass Elliot (born Ellen Naomi Cohen; September 19, 1941 – July 29, 1974), also known as Mama Cass, was an American singer and actress, best known as a member of the Mamas & the Papas.
Relevant evidence: No