Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.

Example Input: Category: mode of transportation 
Words: train, spider, wave, fly, drive
Example Output: spider

Example Input: Category: widespread 
Words: average, typical, common, general, admiral
Example Output: admiral

Example Input: Category: moral characteristic 
Words: balanced, fair, trustworthy, loyal, luke
Example Output:
luke