Complex sentence: The Atlanta Braves are an American professional baseball franchise based in Atlanta, Georgia since 1966, after having originated and played for many decades in Boston and then having subsequently played in Milwaukee for a little more than a decade.
Split into simpler sentences: The Atlanta Braves are an American professional baseball franchise based in Atlanta, Georgia. Since 1966, after having originated and played for many decades in Boston and then having subsequently played in Milwaukee for a little more than a decade.