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: animal 
Words: flutter, fly, bats, eagle, pounce

Ex Output:
flutter


Ex Input:
Category: weather 
Words: cold, 70, fair, well, luke

Ex Output:
well


Ex Input:
Category: personal characteristic 
Words: relaxing, optimist, cool, classy, relaxed

Ex Output:

relaxing