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: WHO'S AFRAID OF 
Clue: Whether it passes too slowly or too quickly, chronophobia is a fear of this
answer:
time


question:
Category: TRAVEL INDIANAPOLIS 
Clue: Union Station has a hotel that features these sleeping cars converted into hotel suites
answer:
pullman cars


question:
Category: BODY PARTS 
Clue: The smallest human cell is this cell originating only in the male
answer:

sperm cell