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: ocean 
Words: late, wave, blue, current, drink
Example Output: late

Example Input: Category: window material 
Words: panel, translucent fabric, spatula, metal, glass
Example Output: spatula

Example Input: Category: police punishment 
Words: probation, suspension, jail, fine, attractive
Example Output:
attractive