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: ocean 
Words: current, data sets, main, sea, wave

Output: data sets


Input: Consider Input: Category: shady activities 
Words: cookies, wrongful, fudge, smuggled, smear

Output: cookies


Input: Consider Input: Category: bird 
Words: crane, swift, neck, sandpiper, dump truck


Output: dump truck