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: 3-D 
Clue: It's the next federal holiday after Memorial Day

SOLUTION: independence day

PROBLEM: Category: HE WAS IN THAT? 
Clue: In 1969, in his pre-"Phantom" days, he played Cornelius Hackl in the film version of "Hello, Dolly!"

SOLUTION: michael crawford

PROBLEM: Category: STICK OUT YOUR MOTHER TONGUE 
Clue: "Ransack" comes from Rannsaka, in the language called "Old" this, also a group known for ransacking

SOLUTION:
norse