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: construction 
Words: tackle, crane, digger, sandpiper, dump truck

Ex Output:
sandpiper


Ex Input:
Category: animal 
Words: hamster, mice, fish, tiger, row

Ex Output:
row


Ex Input:
Category: weather 
Words: fair, level, cold, sunny, tangle

Ex Output:

level