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 consistency, answers should be in all lower cased letters.
PROBLEM: Category: NICK NAMES 
Clue: Drumroll, please, for this star of "Drumline" who is the CEO of the Can I Ball record label

SOLUTION: nick cannon

PROBLEM: Category: THE HISTORY OF APRIL 9th 
Clue: 1959: NASA publicly introduces Messrs. Glenn, Shepard & the rest of this program's 7 astronauts

SOLUTION: mercury

PROBLEM: Category: CHRISTMAS 
Clue: Served in a large bowl, this holiday drink derives its name from Old Norse for "be healthy"

SOLUTION:
wassail