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: aesthetic characteristic 
Words: luke, fair, variety, tone, well

Output: luke


Input: Consider Input: Category: secretary duty 
Words: support, hardware, prepare, file, make coffee

Output: hardware


Input: Consider Input: Category: mode of transportation 
Words: waggle, glide, bus, fly, bike


Output: waggle