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, tide, current, jetstream, brine

Output: up to the moment


Input: Consider Input: format, sort mail, make coffee, order office supplies, file

Output: format


Input: Consider Input: fine, honorable, warm, fair, balanced


Output: warm