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: truss rod, pick, chord, worried, fret

Output: worried


Input: Consider Input: corner, deck, fight, knockout, blind

Output: blind


Input: Consider Input: spoon, plastic, glass, vinyl, metal


Output: spoon