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: weather 
Words: cold, luke, fair, mild, light
answer:
light


question:
Category: computers 
Words: image, format, reception, file, folder
answer:
reception


question:
Category: animals 
Words: horse, cow, cat, stoop, duck
answer:

stoop