Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.

Input: Consider Input: file, keys, document, fax, ram

Output: fax


Input: Consider Input: canvas, deck, corner, apron, queen

Output: queen


Input: Consider Input: bright, prime, level, fine, detailed


Output: prime