Complex sentence: In response, Wilson came back to Pittsburgh in 1996 to re-write it extensively for what is referred to as its professional premiere, directed by Marion McClinton--the first Pittsburgh Cycle premiere not to be directed by Lloyd Richards.
Split into simpler sentences: In response, Wilson returned to Pittsburgh in 1996 re-writing it extensively for what is referred to as its professional premiere, which was directed by Marion McClinton. This was the first Pittsburgh Cycle premiere not to be directed by Lloyd Richards.