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.

Input: Consider Input: Category: ocean 
Words: late, wave, blue, current, drink

Output: late


Input: Consider Input: Category: secretary duty 
Words: support, fax, file, download, errands

Output: download


Input: Consider Input: Category: location (proximity) 
Words: nearest, beside, close, bordering, out of service


Output: out of service