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: type of sandwich 
Words: submarine, burger, bar, lettuce, club
Example Output: bar

Example Input: Category: weather 
Words: sunny, loyal, tangle, fair, raining
Example Output: loyal

Example Input: Category: widespread 
Words: basic, captain, ordinary, general, universal
Example Output:
captain