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: answer, answer calls, space, file, schedule

A: space
****
Q: fax, program, file, make coffee, answer

A:
program
****