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: weather 
Words: 70, sunny, equitable, fair, tangle

Output: equitable


Input: Consider Input: Category: aesthetic characteristic 
Words: tangle, level, milky, fair, light


Output: tangle