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: mode of transportation 
Words: bee, swim, fly, car, walk

Output: bee


Input: Consider Input: Category: emotional status 
Words: excited, content, item, disappointed, jealous

Output: item


Input: Consider Input: Category: weather 
Words: fair, make the grade, just, luke, warm


Output: just