Question: What is the nickname for the founder of the independent semi-professional American football team J.P. Rooneys?
Sentence (from "Art Rooney"): Arthur Joseph Rooney Sr. (January 27, 1901 – August 25, 1988), often referred to as "The Chief", was the founding owner of the Pittsburgh Steelers, an American football franchise in the National Football League (NFL), from 1933 until his death.
Relevant evidence: Yes