Complex sentence: After more than 600 performances, she went on to work as a writer and performer at the improvisational comedy theater the Brave New Workshop in Minneapolis, which boasts such alumni as Pat Proft, Louie Anderson, Cedric Yarbrough, Mo Collins and Al Franken.
Split into simpler sentences: After more than 600 performances, she went on to write and perform at Brave New Workshop, the improvisational comedy theatre in Minneapolis. The theater boasts such alumni as Pat Proft, Louie Anderson, Cedric Yarbrough, Mo Collins and Al Franken.