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.

[Q]: Category: WALK INTO A "BAR" 
Clue: A pier, wharf or landing place: San Francisco has a famous one
[A]: embarcadero


[Q]: Category: 19th CENTURY PEOPLE 
Clue: This hero was a sailor before joining the cause of Italian unity in the 1830s & trading blue & white for red
[A]: garibaldi


[Q]: Category: PO 
Clue: The Po is the longest river in this country
[A]:
italy