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: stoop, crouch, bow, duck, dog
answer:
dog


question:
Category: emotional status 
Words: board, bored, emotional supports, frustrated, fret
answer:
board


question:
Category: body part 
Words: hand, finger, foot, knee, centimeter
answer:

centimeter