Complex sentence: After receiving his undergraduate degree from Yale University, Orr opened his architectural practice in 1919; he completed a master's degree in fine arts at Yale in 1927, where he designed the Taft Memorial Tower, and Harkness Memorial Hall.
Split into simpler sentences: After receiving his undergraduate degree from Yale University, Orr opened his own architectural practice in 1919. He completed a master's degree in fine arts at Yale in 1927, where he designed the Taft Memorial Tower and Harkness Memorial Hall.