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.

Input: Consider Input: Category: construction 
Words: tackle, crane, digger, sandpiper, dump truck

Output: sandpiper


Input: Consider Input: Category: animal 
Words: pounce, fly, swim, walk, walk

Output: walk


Input: Consider Input: Category: accomodation 
Words: flat, studio, duplex, valley, mansion


Output: valley