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: bird 
Words: dump truck, tackle, crane, hoist, davit
Example Output: dump truck

Example Input: Category: date status 
Words: data sets, tide, late, detestings, current
Example Output: tide

Example Input: Category: ocean 
Words: blue, moon, jetstream, data sets, current
Example Output:
data sets