Question: Who was the chair of a commission which investigated the riot associated with the killing of George Jackson at San Quentin State Prison in 1971?
Sentence (from "Attica Prison riot"): The Attica Prison riot, also known as the Attica Prison rebellion or Attica Prison uprising, occurred at the Attica Correctional Facility in Attica, New York, United States in 1971.
Relevant evidence: No