<http://schema.org/alternativeHeadline>
"Matthew Hurley's book asks the questions, 'Why do humans find anything funny? Why do we have a sense of humor in the first place?'"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/lifestyle/arts-culture/stories/why-our-brains-make-us-laugh>