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: corporate 
Words: corporation, firm, alignment, taut, leverage

Output: taut


Input: Consider Input: Category: body part 
Words: heel, shin, pound, finger, foot

Output: pound


Input: Consider Input: Category: accomodation 
Words: condominium, duplex, studio, flat, level


Output: level