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.

Category: CAPITAL 
Clue: Yokusuka & Yokohama lie on the same harbor as this capital
tokyo

Category: THE DIGESTIVE SYSTEM 
Clue: Gravity isn't required to move food down to your stomach; this process moves it down the esophagus
peristalsis

Category: WORD "PLAY" 
Clue: A radio station's music catalog

the playlist