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: townhome, mountain, studio, flat, apartment

Output: mountain


Input: Consider Input: hunt, whale, shark, fish, mice

Output: hunt


Input: Consider Input: just, make the grade, well, unjust, fair


Output: make the grade