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: ashamed, down, emotional upsets, disgusted, ground

Ex Output:
ground


Ex Input:
Category: corporate 
Words: synergy, combined, concerted, resistant, firm

Ex Output:
resistant


Ex Input:
Category: physical activity 
Words: exercise, fall, autumn, bend, plummet

Ex Output:

autumn