Complex sentence: Fort Hamilton Historic District is a historic district on Rose Island in Newport, Rhode Island that includes Rose Island Light and an early U.S. military fortification designed in part by Major Louis de Tousard.
Split into simpler sentences: Fort Hamilton Historic District is a historic district comprised of Rose Island in Newport, Rhode Island. The district includes Rose Island Light and an early U.S. military fortification designed in part by Major Louis de Tousard.