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: weather 
Words: 70, sunny, equitable, fair, tangle

Output: equitable


Input: Consider Input: Category: geographical property 
Words: mountain, flat, hill, mansion, plain

Output: mansion


Input: Consider Input: Category: outdoor sport activity 
Words: climbing, cow, hiking, fish, wrestle


Output: cow