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.

Ex Input:
flat, level, mansion, smooshed, elevation

Ex Output:
mansion


Ex Input:
merchandise, specialty, tools, content, angry

Ex Output:
angry


Ex Input:
frame, lead, dish, handle, glass

Ex Output:

dish