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: season 
Words: winter, roll, spring, hiems, fall

Output: roll


Input: Consider Input: Category: window material 
Words: panel, translucent fabric, spatula, metal, glass

Output: spatula


Input: Consider Input: Category: ocean 
Words: current, main, blue, history, jetstream


Output: history