Create a set of triples that describes the content in the following sentence.

Frederick, Maryland is the nearest city to the 14th New Jersey Volunteer Infantry Monument which was established on 11 July 1907 at the Monocacy National Battlefield in Frederick, Maryland. The monument is categorised as a historic district in the US and is owned by the National Park Service.
Monocacy National Battlefield LOCATION Frederick County, Maryland
14th New Jersey Volunteer Infantry Monument ESTABLISHED "1907-07-11"
14th New Jersey Volunteer Infantry Monument COUNTRY "United States"
14th New Jersey Volunteer Infantry Monument CATEGORY Historic districts in the United States
14th New Jersey Volunteer Infantry Monument DISTRICT Monocacy National Battlefield
Monocacy National Battlefield NEAREST_CITY Frederick, Maryland
14th New Jersey Volunteer Infantry Monument OWNING_ORGANISATION National Park Service