Complex sentence: On December 5,1914, Emil Bach and his wife purchased the site of the Bach House from Amelia Ludwick and her husband and in 1915 Bach commissioned Frank Lloyd Wright to design the house.
Split into simpler sentences: On December 5,1914, Emil Bach and his wife purchased the site of the Bach House from Amelia Ludwick and her husband. In 1915 Bach commissioned Frank Lloyd Wright to design the house.