Complex sentence: Richard Allen Posner (born January 11,1939) is an American jurist and economist, who is a judge on the United States Court of Appeals for the Seventh Circuit in Chicago and a Senior Lecturer at the University of Chicago Law School.
Split into simpler sentences: Richard Allen Posner (born January 11,1939) is an American jurist and economist. He is currently a judge on the United States Court of Appeals for the Seventh Circuit in Chicago and a Senior Lecturer at the University of Chicago Law School.