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: nutritional value 
Words: vitamin c, salt, sugar, fat, big boned

Output: big boned


Input: Consider Input: Category: mode of transportation 
Words: train, spider, wave, fly, drive

Output: spider


Input: Consider Input: Category: personal characteristic 
Words: cool, freezing, popular, level, funny


Output: freezing