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: secretary duty 
Words: schedule, file, answer calls, correspondence, ram

Output: ram


Input: Consider Input: Category: nutritional value 
Words: iron, heavy, vitamin c, fat, brittleness

Output: brittleness


Input: Consider Input: Category: physical activity 
Words: geese, sprint, duck, bow, swim


Output: geese