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: THE SHORT FORM 
Clue: They're the "apps" in "drinks & apps"

SOLUTION: appetizers

PROBLEM: Category: THE QUOTABLE EINSTEIN 
Clue: This "is more important than knowledge"

SOLUTION: imagination

PROBLEM: Category: T-N-C 
Clue: A long, steep-sided depression in the ground or the ocean floor

SOLUTION:
a trench