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: grasshopper, fly, walk, bus, eagle

A: bus
****
Q: dally, misuse, fritter, whittle, patty

A: patty
****
Q: box, sail, knockout, punch, deck

A:
sail
****