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.

Example Input: Category: secretary duty 
Words: schedule, file, answer calls, correspondence, ram
Example Output: ram

Example Input: Category: emotional status 
Words: worried, angry, jack, fret, emotional upsets
Example Output: jack

Example Input: Category: fried food 
Words: pie, blueberry, fritter, dunker, goodbye
Example Output:
goodbye