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: general, boring, soldier, ubiquitous, average

Output: soldier


Input: Consider Input: running., close, bordering, nearer, touching

Output: running.


Input: Consider Input: positive, tropical, refreshing, cold, cool


Output: positive