What concepts are described in the following sentence?

"The 14th New Jersey Volunteer Infantry Monument is a historic district in the United States, and was established on 11th July 1907 at the Monocacy National Battlefield, where it is owned by the National Park Service."

Return the answer as pairs of triples.
14th New Jersey Volunteer Infantry Monument CATEGORY Historic districts in the United States
14th New Jersey Volunteer Infantry Monument DISTRICT Monocacy National Battlefield
14th New Jersey Volunteer Infantry Monument OWNING_ORGANISATION National Park Service
14th New Jersey Volunteer Infantry Monument ESTABLISHED "1907-07-11"