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: location (proximity) 
Words: near, close, gated, bordering, on top of
Example Output: gated

Example Input: Category: guitar part 
Words: inlays, concerned, string, notes, fret
Example Output: concerned

Example Input: Category: mode of transportation 
Words: eagle, car, glide, fly, flutter
Example Output:
eagle