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: emotional status 
Words: truss rod, emotional supports, emotional upsets, emotionalities, fret

Output: truss rod


Input: Consider Input: Category: secretary duty 
Words: answer calls, image, organize, file, correspondence

Output: image


Input: Consider Input: Category: geographical property 
Words: plain, smooshed, level, mountain, flat


Output: level