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 property 
Words: fat, vitamin c, area, brittleness, absorption
answer:
vitamin c


question:
Category: animals 
Words: duck, jog, cat, pig, mallet
answer:
jog


question:
Category: emotional status 
Words: neat, calm, fine, detached, relaxed
answer:

neat