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: outdoor sport activity 
Words: swim, wrestle, fish, canyoning, horse
answer:
horse


question:
Category: weather 
Words: sunny, loyal, tangle, fair, raining
answer:
loyal


question:
Category: boxing terminology 
Words: tko, deck, check, canvas, glove
answer:

check