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: outdoor sport activity 
Words: fish, hiking, row, shark, canoe

Output: shark


Input: Consider Input: Category: aesthetic characteristic 
Words: size, alright, even, variety, fair

Output: alright


Input: Consider Input: Category: corporate 
Words: amalgamated, alignment, shareholders, firm, stiff


Output: stiff