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: running., close, bordering, nearer, touching

Output: running.


Input: Consider Input: hoist, sandpiper, crane, swallow, heron

Output: hoist


Input: Consider Input: foot, pound, eye, heel, elbow


Output: pound