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: season 
Words: winter, roll, spring, hiems, fall

Output: roll


Input: Consider Input: Category: type of rigidity 
Words: tough, taut, rough, amalgamated, firm

Output: amalgamated


Input: Consider Input: Category: construction 
Words: winch, upraise, crane, flamingo, davit


Output: flamingo