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: signal, sea, current, drink, belated

A: belated
****
Q: truss rod, pick, chord, worried, fret

A: worried
****
Q: chocolate, fudge, mangle, cupcake, cookies

A:
mangle
****