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: SINGING ACTORS 
Clue: In 2001 this Oscar winner sang "Angelina", a romantic tribute to his fifth wife, on his album "Private Radio"

SOLUTION: billy bob thornton

PROBLEM: Category: SOUP ALPHABET 
Clue: "B" is for this thin soup; Swanson's makes beef, chicken & vegetable varieties

SOLUTION: broth

PROBLEM: Category: FAMILIAR PHRASES 
Clue: It's "The shortest distance between two points"

SOLUTION:
straight line