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: happy, substance, shop, tools, content

Output: happy


Input: Consider Input: nervous, frustrated, fret, jack, concerned

Output: jack


Input: Consider Input: tart, fudge, brownie, rich, invent


Output: invent