Complex sentence: The John F. Kennedy Memorial High School Mustangs compete in the Greater Middlesex Conference, which includes public and private high schools located in the greater Middlesex County area, operating under the supervision of the New Jersey State Interscholastic Athletic Association.
Split into simpler sentences: The John F. Kennedy Memorial High School Mustangs compete in the Greater Middlesex Conference, which includes public and private high schools located in the greater Middlesex County area. The league operates under the supervision of the New Jersey State Interscholastic Athletic Association.