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, cow, duck, jog, squat
answer:
cow


question:
Category: measurement unit 
Words: ounce, ear, inch, foot, milimeter
answer:
ear


question:
Category: boxing terminology 
Words: ring, blind, deck, blocking, canvas
answer:

blind