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: up to the moment, current, detests, tide, history

Output: tide


Input: Consider Input: down, lower, opposite of up, ground, remorseful

Output: remorseful


Input: Consider Input: bird, bats, train, fly, eagle


Output: train