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: poker 
Words: fold, deck, board, call, knockout
answer:
knockout


question:
Category: animal 
Words: fish, bat, sea turtle, trap, goat
answer:
trap


question:
Category: social gathering 
Words: picnic, discothek, place, club, burger
answer:

burger