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: bird 
Words: flamingo, crane, neck, ostrich, davit

Output: davit


Input: Consider Input: Category: physical property 
Words: brittleness, protein, bulky, skinny, fat

Output: protein


Input: Consider Input: Category: kitchenware 
Words: spatula, glass, plastic, plate, dish


Output: plastic