Complex sentence: James Riddle Hoffa (February 14,1913--disappeared July 30,1975) was an American labor union leader and author who served as the President of the International Brotherhood of Teamsters (IBT) union from 1958 until 1971.
Split into simpler sentences: James Riddle Hoffa (February 14,1913--disappeared July 30,1975). He was an American labor union leader and author who served as the President of the International Brotherhood of Teamsters (IBT) union from 1958 until 1971.