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: flutter, soar, bee, jog, fly

Output: bee


Input: Consider Input: bike, flap, fly, walk, wave

Output: walk


Input: Consider Input: fire, flame, burn, air, replace


Output: replace