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]: running., close, bordering, nearer, touching
[A]: running.


[Q]: fret, nervous, board, fingerpick, jack
[A]: nervous


[Q]: fax, prepare, sort mail, software, file
[A]:
software