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: secretary duty 
Words: errands, fax, file, type, ram

Output: ram


Input: Consider Input: Category: weather 
Words: 70, sunny, equitable, fair, tangle

Output: equitable


Input: Consider Input: Category: weather 
Words: raining, tangle, fair, stormy, ok


Output: ok