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: nervous, bored, emotional supports, chord, fret

Output: chord


Input: Consider Input: happy, substance, shop, tools, content

Output: happy


Input: Consider Input: outing, discothek, club, group, bacon


Output: bacon