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.

[Q]: schedule, errands, file, schedule appointments, hardware
[A]: hardware


[Q]: blue, current, drink, water, prompt
[A]: prompt


[Q]: level, fair, milky, size, make the grade
[A]:
make the grade