Complex sentence: The GEO Group was formerly known as the Wackenhut Corrections division, and includes the former Correctional Services Corporation and Cornell Companies, which were purchased by GEO in 2005 and 2010.
Split into simpler sentences: The GEO Group was formerly known as the Wackenhut Corrections division. It includes the former Correctional Services Corporation and Cornell Companies, which were purchased by GEO in 2005 and 2010.