Complex sentence: Lemuel Everett Wilmarth (November 11,1835--July 27,1918), an American painter, was a founder of the Art Student's League in New York City and a member of the National Academy of Design.
Split into simpler sentences: Lemuel Everett Wilmarth, (November 11,1835--July 27,1918), was an American painter. He was a founder of the Art Student's League in New York City and a member of the National Academy of Design.