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: wrestle, fish, iguana, hiking, hunt
Example Output: iguana

Example Input: Category: date status 
Words: postponed, timely, early, current, jetstream
Example Output: jetstream

Example Input: Category: poker 
Words: chips, joker, cards, deck, jab
Example Output:
jab