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: police punishment 
Words: fine, prime, firstrate, comfortable, ticket
Example Output: comfortable

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

Example Input: Category: kitchenware 
Words: glass, knife, plate, spatula, handle
Example Output:
handle