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: order office supplies, file, errands, prepare, motherboard

Output: motherboard


Input: Consider Input: tko, ring, corner, hearts, deck

Output: hearts


Input: Consider Input: firm, combined, amalgamated, solid, synergy


Output: solid