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: outdoor sport activity 
Words: hiking, climbing, mice, fish, row
Example Output: mice

Example Input: Category: emotional status 
Words: high quality, fine, annoyed, relaxed, ok
Example Output: high quality

Example Input: Category: moral characteristic 
Words: matter of fact, precise, bold, meat, frank
Example Output:
meat