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: flamingo, crane, davit, pelican, derrick

Output: davit


Input: Consider Input: sustainability, firm, amalgamated, combined, rigged

Output: rigged


Input: Consider Input: blunt, provision, honesty, bold, frank


Output: provision