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: ocean 
Words: current, data sets, main, sea, wave
Example Output: data sets

Example Input: Category: type of sandwich 
Words: roll, hoagie, bacon, club, community
Example Output: community

Example Input: Category: aesthetic characteristic 
Words: hot, high quality, fine, annoyed, neat
Example Output:
annoyed