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.

Input: Consider Input: Category: physical property 
Words: fat, vitamin c, area, brittleness, absorption

Output: vitamin c


Input: Consider Input: Category: emotional display 
Words: pester, fawn, suppressed, follow, woods

Output: woods


Input: Consider Input: Category: social gathering 
Words: dance hall, club, burger, picnic, outing


Output: burger