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: body part 
Words: heel, shin, pound, finger, foot

Output: pound


Input: Consider Input: Category: aesthetic characteristic 
Words: well, windy, even, fair, level

Output: windy


Input: Consider Input: Category: animal 
Words: fly, wave, pounce, grasshopper, leap


Output: wave