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: duck, cat, stoop, swan, goose

Output: stoop


Input: Consider Input: honorable, medium, trustworthy, fair, balanced

Output: medium


Input: Consider Input: combined, firm, common, solid, concerted


Output: solid