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: blow, squander, apple, fritter, divide

A: apple
****
Q: flutter, soar, bee, jog, fly

A: bee
****
Q: neck, concrete pourer, mallet, swallow, crane

A:
concrete pourer
****