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: grasshopper, fly, walk, bus, eagle

Output: bus


Input: Consider Input: jog, flap, fly, bee, bus

Output: bee


Input: Consider Input: tone, just, equitable, fair, unprejudiced


Output: tone