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: type of sandwich 
Words: open-faced, team, roll, doorstep, club

Ex Output:
team


Ex Input:
Category: shady activities 
Words: banned, replace, smear, chocolate cake, fudge

Ex Output:
chocolate cake


Ex Input:
Category: bird 
Words: crane, swift, derrick, davit, steam roller

Ex Output:

steam roller