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.

Input: Consider Input: Category: animal 
Words: ant, walk, bike, fly, dangle

Output: bike


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

Output: bored


Input: Consider Input: Category: fried food 
Words: fritter, dunker, spend, doughnut, apple


Output: spend