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: chocolate food 
Words: replace, fudge, cupcake, heavy, cream

Ex Output:
replace


Ex Input:
Category: alcoholic drinks 
Words: wine, rum, bridge, tonic, gin

Ex Output:
bridge


Ex Input:
Category: outdoor sport activity 
Words: iguana, kayak, canoe, trap, fish

Ex Output:

iguana