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: warm, optimist, hot, relaxing, cool
Example Output: optimist

Example Input: closest, finished for the day, bordering, nearest, close
Example Output: finished for the day

Example Input: fried, seperate, dumpling, fritter, pastry
Example Output:
seperate