Complex sentence: The Alliance has modelled its activities on the work of Reverend Eugene Rivers of Boston who has utilized a corps of pastors to who have worked to create alternatives to street gangs for disadvantaged Black youths.
Split into simpler sentences: The Alliance has formed its activities on the work of Reverend Eugene Rivers of Boston who has utilized a corps of pastors. These pastors have worked to create alternatives to street gangs for disadvantaged Black youths.