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: motherboard, schedule appointments, schedule, file, type

A: motherboard
****
Q: crane, ostrich, davit, dump truck, pelican

A: dump truck
****
Q: fudge, unwarranted, lie, rich, falsehood

A:
rich
****