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: moral characteristic 
Words: stern, frank, brash, loyalty, goodies

Ex Output:
goodies


Ex Input:
Category: geographical property 
Words: flat, horizontal, smooshed, elevation, house

Ex Output:
house


Ex Input:
Category: window material 
Words: cup, glass, translucent fabric, woodwork, lead

Ex Output:

cup