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: social gathering 
Words: grilled cheese, place, club, dance hall, meeting
answer:
grilled cheese


question:
Category: military rank 
Words: ubiquitous, general, captain, major, sergeant
answer:

ubiquitous