Sentence: The 14th New Jersey Volunteer Infantry Monument, located on the Monocacy National Battlefield in Frederick County, Maryland, is categorised as a historic district in the United States.

What data can be extracted from this sentence?
Monocacy National Battlefield, location, Frederick County, Maryland; 14th New Jersey Volunteer Infantry Monument, category, Historic districts in the United States; 14th New Jersey Volunteer Infantry Monument, district, Monocacy National Battlefield