TASK DEFINITION: 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.
PROBLEM: Category: FULL "MOON" 
Clue: Mercer & Mancini composed this 1961 classic

SOLUTION: "moon river"

PROBLEM: Category: DIRECTORS 
Clue: Biographer Donald Spoto says that as a schoolboy, this "Vertigo" director was nicknamed "Cocky"

SOLUTION: alfred hitchcock

PROBLEM: Category: SCANDINAVIA 
Clue: This buffet's traditional 1st course is herring

SOLUTION:
a smörgåsbord