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: fritter, dunker, patty, waste, danish

A: waste
****
Q: duck, dog, elephant, ostrich, stoop

A:
stoop
****