Complex sentence: At the 1960 Democratic National Convention, a rift began to appear in the relationship between Clement and Ellington, as the former endorsed John F. Kennedy for president, and the latter endorsed Lyndon B. Johnson.
Split into simpler sentences: At the 1960 Democratic National Convention, a rift began to appear in the relationship between Clement and Ellington. The former endorsed John F. Kennedy for president, and the latter endorsed Lyndon B. Johnson.