Sentence: The 14th New Jersey Volunteer Infantry Monument, a historic district in the United States, is located in the district of the Monocacy National Battlefield in Frederick County, Maryland, with the nearest city being Frederick, Maryland.

What structured data could we extract 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; Monocacy National Battlefield, nearestCity, Frederick, Maryland