Complex sentence: Henry Franklin Graff (born August 11,1921) is a noted historian who served on the faculty of Columbia University from 1946 to 1991, including a period as Chairman of the History Department.
Split into simpler sentences: Henry Franklin Graff (born August 11,1921), is a noted historian who served on the faculty of Columbia University. He served on the faculty of Columbia University from 1946 to 1991, including a period as Chairman of the History Department.