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.
--------
Question: Category: poker 
Words: blind, chips, queen, gunwale, deck

Answer: gunwale


Question: Category: police punishment 
Words: suspension, exquisite, prime, fine, flyaway

Answer: exquisite


Question: Category: computers 
Words: sort mail, keys, motherboard, format, file

Answer:
sort mail