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: shady activities 
Words: invent, smuggled, smear, fudge, pie

Output: pie


Input: Consider Input: Category: police punishment 
Words: fine, prime, firstrate, comfortable, ticket

Output: comfortable


Input: Consider Input: Category: animal 
Words: bee, fly, fish, leap, flutter


Output: flutter