Complex sentence: Since a death penalty conviction automatically sets in motion a series of appeals, the Innocence Project aided Williamson's attorney, Mark Barrett, in exposing several glaring holes in the prosecution's case and the credibility of the prosecution's witnesses.
Split into simpler sentences: Since a death row conviction automatically sets in motion a series of appeals. The Innocence Project aided Williamson's attorney, Mark Barrett, to expose several glaring lacunae in the prosecution's case and the credibility of the prosecution's witnesses.