Question: Kris Kristofferson, whose songs had been featured on Joan Baez' 1973 compilation "Hits: Greatest and Others," has also been in what music supergroup was with artists Waylon Jennings, Willie Nelson, and Johnny Cash? 
Sentence (from "Hits: Greatest and Others"): Unlike previous compilations, this one skipped over most of Baez' earlier traditional material almost entirely, in favor of her more recent singer-songwriter material and covers.
Relevant evidence: No