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: emotional status 
Words: angry, joyful, tools, fearful, content
answer:
tools


question:
Category: measurement unit 
Words: meter, inch, foot, heel, pound
answer:
heel


question:
Category: physical activity 
Words: push, duck, cow, swim, dodge
answer:

cow