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: location (proximity) 
Words: closer, close, adjacent, gated, right there
Example Output: gated

Example Input: Category: aesthetic characteristic 
Words: ticket, fine, bright, detailed, exquisite
Example Output: ticket

Example Input: Category: type of rigidity 
Words: hard, firm, rough, resistant, concerted
Example Output:
concerted