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: weather 
Words: sunny, alright, deal, fair, tangle

Ex Output:
alright


Ex Input:
Category: social gathering 
Words: group, clan, team, club, doorstep

Ex Output:
doorstep


Ex Input:
Category: moral characteristic 
Words: alright, ok, unjust, fair, light

Ex Output:

light