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: guitar part 
Words: truss rod, fret, neck, bored, strap lock

Ex Output:
bored


Ex Input:
Category: weather 
Words: stormy, make the grade, sunny, texture, fair

Ex Output:
texture


Ex Input:
Category: weather 
Words: endure, balanced, warm, stormy, fair

Ex Output:

balanced