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: crane, ostrich, davit, dump truck, pelican

A: dump truck
****
Q: concerned, strap lock, anxious, bored, fret

A: strap lock
****
Q: sweet roll, cake, fried, fritter, waste away

A:
waste away
****