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.

Example Input: Category: weather
Words: sunny, alright, deal, fair, tangle
Example Output: alright

Example Input: Category: widespread
Words: regular, colonel, typical, ordinary, general
Example Output: colonel

Example Input: Category: computers
Words: text, firewall, format, file, support
Example Output:
support