You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

[EX Q]: Category: THE BRITISH ISLES 
Clue: This island group that lies just north of the Scottish mainland was known to classical writers as the Orcades
[EX A]: the orkney islands

[EX Q]: Category: U.S. GEOGRAPHY 
Clue: The West Point Military Reservation includes Constitution Island, which lies in this river
[EX A]: the hudson river

[EX Q]: Category: ZOOLOGY 
Clue: Some spiders have a special organ called a cribellum that enables them to do this; how artistic
[EX A]:
spin a web