Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.

Input: Consider Input: truss rod, emotional supports, emotional upsets, emotionalities, fret

Output: truss rod


Input: Consider Input: angry, joyful, tools, fearful, content

Output: tools


Input: Consider Input: text, hardware, file, reception, download


Output: reception