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: moral characteristic 
Words: honorable, balanced, fair, pale, trustworthy

Output: pale


Input: Consider Input: Category: bird 
Words: winch, swift, crane, hoist, ostrich

Output: winch


Input: Consider Input: Category: corporate 
Words: firm, inflexible, sustainability, streamline, corporation


Output: inflexible