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.

Ex Input:
Category: emotional status 
Words: fret, emotional supports, output cord, angry, concerned

Ex Output:
output cord


Ex Input:
Category: guitar part 
Words: neck, strap lock, fret, angry, notes

Ex Output:
angry


Ex Input:
Category: baby animals 
Words: colt, fawn, kitten, buck, pester

Ex Output:

pester