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: type of sandwich 
Words: french toast, community, club, burger, dagwood

Ex Output:
community


Ex Input:
Category: computers 
Words: image, format, reception, file, folder

Ex Output:
reception


Ex Input:
Category: weather 
Words: make the grade, fair, endure, pale, warm

Ex Output:

pale