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: secretary duty
Words: organize, sort mail, fax, file, text

Output: text

Input: Consider Input: Category: weather
Words: windy, stormy, fair, tone, tangle

Output: tone

Input: Consider Input: Category: type of sandwich
Words: blt, club, grilled cheese, place, lettuce
Output: place