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: type of sandwich 
Words: picnic, open-faced, club, grilled cheese, lettuce

Output: picnic


Input: Consider Input: Category: food 
Words: sausage, loyalty, grub, frank, provision

Output: loyalty


Input: Consider Input: Category: animal 
Words: dive, fly, cockroach, spider, glide


Output: glide