Complex sentence: Francis Cecil Sumner (December 7,1895-January 12,1954) was born in Pine Bluff, Arkansas was an influential psychologist who is commonly referred to as the "Father of Black Psychology".
Split into simpler sentences: Francis Cecil Sumner (December 7,1895-January 12,1954) was born in Pine Bluff, Arkansas. He was an influential psychologist who is commonly referred to as the "Father of Black Psychology".