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: "BLACK" MOVIES 
Clue: This 1979 Disney sci-fi film starring Maximilian Schell was nominated for an Oscar for Visual Effects

SOLUTION: the black hole

PROBLEM: Category: E BEFORE I 
Clue: Hold your horses! & to make it easier, use these straps that attach to the bit of the bridle

SOLUTION: reins

PROBLEM: Category: CELEBS 
Clue: This "Men In Black" star earned his "Prince" nickname in school due to his "charming" manner

SOLUTION:
will smith