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: fried food 
Words: apple, whittle, dumpling, fritter, pie

Ex Output:
whittle


Ex Input:
Category: guitar part 
Words: neck, fret, jack, pick, angry

Ex Output:
angry


Ex Input:
Category: guitar part 
Words: headstock, string, sad, fret, strap lock

Ex Output:

sad