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: animal 
Words: flutter, swim, ant, fly, bats

Output: flutter


Input: Consider Input: Category: physical activity 
Words: drop, fall, leaves, bend, exercise

Output: leaves


Input: Consider Input: Category: food 
Words: weenie, precise, vittles, frank, goodies


Output: precise