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.

Input: Consider Input: Category: mode of transportation 
Words: spider, fly, drive, train, soar

Output: spider


Input: Consider Input: Category: boxing terminology 
Words: deck, ring, head, knockout, glove

Output: head


Input: Consider Input: Category: moral characteristic 
Words: pork, frank, bold, honesty, blunt


Output: pork