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: physical activity 
Words: sprint, get down, cow, duck, bow
answer:
cow


question:
Category: physical property 
Words: obese, heavy, area, chunky, fat
answer:
heavy


question:
Category: social gathering 
Words: club, place, open-faced, group, meeting
answer:

open-faced