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: consumer product 
Words: content, panicked, file, substance, jewelry

Ex Output:
panicked


Ex Input:
Category: animal 
Words: bird, fish, fly, drive, eagle

Ex Output:
drive


Ex Input:
Category: geographical property 
Words: mountain, duplex, flat, smooth, plane

Ex Output:

duplex