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: aesthetic characteristic 
Words: well, windy, even, fair, level

Ex Output:
windy


Ex Input:
Category: alcoholic drinks 
Words: gin, tonic, rum, spider, tequila

Ex Output:
spider


Ex Input:
Category: window material 
Words: cup, glass, frame, panel, acrylic

Ex Output:

cup