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.

Example Input: heron, davit, egret, derrick, crane
Example Output: davit

Example Input: deck, board, cards, knockout, draw
Example Output: knockout

Example Input: handsome, suspension, detailed, neat, fine
Example Output:
suspension