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: window material 
Words: panel, translucent fabric, spatula, metal, glass

Ex Output:
spatula


Ex Input:
Category: chocolate food 
Words: rich, chocolate, fudge, chocolate cake, unwarranted

Ex Output:
unwarranted


Ex Input:
Category: moral characteristic 
Words: brash, weenie, matter of fact, concise, frank

Ex Output:

weenie