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: animal
Words: fly, dangle, bee, jump, flap
Example Output: flap

Example Input: Category: outdoor sport activity
Words: kayak, raft, fish, canyoning, dolphin
Example Output: dolphin

Example Input: Category: moral characteristic
Words: fair, unprejudiced, loyal, medium, honorable
Example Output:
medium