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: food 
Words: frank, entree, goodies, concise, wiener

Ex Output:
concise


Ex Input:
Category: employment activity 
Words: scold, water, fire, praise, replace

Ex Output:
water


Ex Input:
Category: police punishment 
Words: detailed, flyaway, prison, prime, fine

Ex Output:

detailed