Sentence: Frederick city in Frederick County, Maryland is the nearest city to the Monocacy National Battlefield which is the location of the 14th New Jersey Volunteer Infantry monument. The monument was established on 11 July 1907 and belongs to the category of historic districts 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, established, "1907-07-11"; 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