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: weather 
Words: brisk, unprejudiced, fair, endure, clime
Example Output: unprejudiced

Example Input: Category: construction 
Words: tackle, crane, digger, sandpiper, dump truck
Example Output: sandpiper

Example Input: Category: ocean 
Words: late, current, wave, main, brine
Example Output:
late