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: outdoor sport activity 
Words: hike, cow, trap, row, fish

Ex Output:
cow


Ex Input:
Category: poker 
Words: chips, punch, deck, draw, queen

Ex Output:
punch


Ex Input:
Category: baby animals 
Words: pester, fawn, woods, doe, antling

Ex Output:

pester