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: neighboring, right there, shut down, close, bordering
Example Output: shut down

Example Input: Category: physical property 
Words: sugars, obese, big boned, fat, pasty
Example Output: sugars

Example Input: Category: date status 
Words: do tests, wave, data sets, history, current
Example Output:
wave