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: folder, support, order office supplies, correspondence, file

Output: folder


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

Output: spatula


Input: Consider Input: Category: weather 
Words: impartial, tangle, 70, fair, luke


Output: impartial