Complex sentence: Soon a new council was added to the jail and assigned to Jack who convinced that he could get out of jail if he had a number of things: a place to stay, a college that will accept him, and a job.
Split into simpler sentences: Soon a new council was added to the jail and assigned to Jack. They convinced him that he could get out of jail if he had a number of things: a place to stay, a college that would accept him, and a job.