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: tumble, summer, fall, bend, lift
answer:
summer


question:
Category: weather 
Words: brisk, fair, sunny, cold, balanced
answer:
balanced


question:
Category: boxing terminology 
Words: deck, corner, bow, caution, punch
answer:

bow