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: social gathering 
Words: meeting, cinema, club, group, submarine

Output: submarine


Input: Consider Input: Category: physical activity 
Words: stoop, crouch, bow, duck, dog

Output: dog


Input: Consider Input: Category: food 
Words: bun, frank, weenie, wiener, honest


Output: honest