Question: At what facility did a prison riot occur in response to the death of the man charged with the murder of John Vincent Mills?
Sentence (from "Attica Prison riot"): On September 9, 1971, two weeks after the killing of George Jackson at San Quentin State Prison, about 1,000 of the Attica prison's approximately 2,200 inmates rioted and took control of the prison, taking 42 staff hostage.
Relevant evidence: Yes