instruction:
Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.
question:
Category: emotional status 
Words: concerned, board, nervous, emotional, fret
answer:
board


question:
Category: police punishment 
Words: flyaway, jail time, ok, arrest, fine
answer:
ok


question:
Category: animal 
Words: bats, pounce, fly, train, run
answer:

train