Task: Question Generation
Input (English): Context : On April 25, 2005, Frank Calabrese, Sr. and a large number of high-profile Chicago Outfit gangsters were charged with murder, racketeering, extortion, and running an illegal gambling business as part of the federal-government initiated ``Operation Family Secrets'' investigation. 
Subject : Frank Calabrese, Sr. 
Relation : convicted of
Output (English): Which crime led to the conviction of Frank Calabrese, Sr.?