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: boats 
Words: crew, deck, rudder, suits, hull

Ex Output:
suits


Ex Input:
Category: outdoor sport activity 
Words: hunting, goat, wrestle, fish, raft

Ex Output:
goat


Ex Input:
Category: outdoor sport activity 
Words: hike, fish, cat, hunting, raft

Ex Output:

cat