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: hiking, climbing, mice, fish, row
answer:
mice


question:
Category: social gathering 
Words: club, group, meeting, grilled cheese, convention
answer:
grilled cheese


question:
Category: aesthetic characteristic 
Words: attractive, detailed, fine, hearing, level
answer:

hearing