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: social gathering 
Words: convention, club, discothek, hamburger, dance hall

Output: hamburger


Input: Consider Input: Category: date status 
Words: belated, current, tide, up to the moment, postponed

Output: tide


Input: Consider Input: Category: weather 
Words: sunny, stormy, fair, windy, tone


Output: tone