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: direction 
Words: up, down, sliding, shameful, right

Output: shameful


Input: Consider Input: Category: physical property 
Words: fat, vitamin c, area, brittleness, absorption

Output: vitamin c


Input: Consider Input: Category: secretary duty 
Words: schedule, file, answer calls, correspondence, ram


Output: ram