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: shady activities 
Words: truffles, lie, falsehood, wrongful, fudge

Ex Output:
truffles


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

Ex Output:
spider


Ex Input:
Category: secretary duty 
Words: type, order office supplies, errands, firewall, file

Ex Output:

firewall