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: windlass, excavator, crane, hummingbird, steam roller

Output: hummingbird


Input: Consider Input: frank, blunt, matter of fact, brash, sausage


Output: sausage