Complex sentence: Nathaniel "Nate" James (b.September 1,1981) is a professional heavyweight boxer from Malden, Massachusetts best known for winning the 2007 National Golden Gloves tournament at super heavyweight.
Split into simpler sentences: Nathaniel "Nate" James (b.September 1,1981) is a professional heavyweight boxer from Malden, Massachusetts. James is best known for winning the 2007 National Golden Gloves tournament at super heavyweight.