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: boxing terminology 
Words: caution, hearts, canvas, deck, fight

Output: hearts


Input: Consider Input: Category: nutritional value 
Words: heavy, fat, protein, obese, carbs

Output: obese


Input: Consider Input: Category: ocean 
Words: current, wave, whirlpool, sea, data sets


Output: data sets