Question: When did the criminal gang formed by someone serving six life sentences at the ADX Florence supermax prison in Colorado?
Sentence (from "Larry Hoover"): His sentences include a 150–200 year sentence for a 1973 murder; and in 1997 after a 17-year investigation of conspiracy, extortion, money laundering, and running a continuing criminal enterprise for leading the gang from state prison, he received a life sentence.
Relevant evidence: No