instruction:
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.
question:
Category: THE SOUND OF MUSIC 
Clue: Poetically, tones are sometimes described adjectivally as this, from the Latin for "sweet"
answer:
dulcet


question:
Category: MOVIE MR. & MRS. 
Clue: It's the title couple played by Brad Pitt & Angelina Jolie in a 2005 movie
answer:
mr. & mrs. smith


question:
Category: "BABY" TALK 
Clue: It's a period of sharp increase in the birthrate, as in the U.S. following WWII
answer:

a baby boom