Complex sentence: The Leavenworth Detention Center, operated for the U.S. Marshals Service, was opened in 1992, the 256-bed facility was the first maximum-security private prison under direct contract with a federal agency.
Split into simpler sentences: The Leavenworth Detention Center, operated for the U.S. Marshals Service, was opened in 1992. This 256-bed facility was the first maximum-security private prison under direct contract with a federal agency.