Original sentence: Phillips Academy is one of the oldest boarding school in the United States , established in 1778 by Samuel Phillips, Jr.. Phillips's uncle founded Phillips Exeter Academy three years later, starting a rivalry that has continued through the centuries
Edited sentence: Phillips Academy is one of the oldest boarding schools in the United States , established in 1778 by Samuel Phillips, Jr.. Phillips's uncle founded Phillips Exeter Academy three years later, starting a rivalry that has continued through the centuries