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: french toast, community, club, burger, dagwood
Example Output: community

Example Input: Category: guitar part 
Words: frustrated, amp, string, fret, headstock
Example Output: frustrated

Example Input: Category: aesthetic characteristic 
Words: handsome, fine, classy, detached, dull
Example Output:
detached