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.

Category: I'M JUST RUNNING IN FOR... 
Clue: ...20 first-class stamps, which will now cost this much total
$7.40

Category: THE CHIEFS 
Clue: He wrote 5 of the 85 "Federalist" essays
john jay

Category: DINING OUT IN EUROPE 
Clue: D' Vijff Vlieghen, or "The 5 Flies", is an elegant restaurant that occupies 5 canal houses in this Dutch city

amsterdam