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.

[EX Q]: string, frustrated, chord, output cord, fret
[EX A]: frustrated

[EX Q]: ok, wispy, jail, prime, fine
[EX A]: ok

[EX Q]: file, schedule appointments, document, order office supplies, prepare
[EX A]:
document