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.

Ex Input:
Category: mode of transportation 
Words: dive, fly, soar, jog, wave

Ex Output:
dive


Ex Input:
Category: consumer product 
Words: content, panicked, file, substance, jewelry

Ex Output:
panicked


Ex Input:
Category: date status 
Words: up to the moment, current, detests, tide, history

Ex Output:

tide