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.

Example Input: sea turtle, whale, dog, fish, hunting
Example Output: hunting

Example Input: swallow, heron, crane, flamingo, tackle
Example Output: tackle

Example Input: ram, software, file, make coffee, download
Example Output:
make coffee