Complex sentence: Willard Roland "Nemo" Gaines (December 23,1897--January 26,1979) was an officer in the United States Navy and a Major League Baseball (MLB) pitcher who played for the Washington Senators.
Split into simpler sentences: Willard Roland "Nemo" Gaines (December 23,1897--January 26,1979) was an American military officer and baseball player. He served as an officer in the United States Navy and played in a Major League Baseball (MLB) pitcher for the Washington Senators.