<http://schema.org/alternativeHeadline>
"Real-life 'X-Files' reveal policy of destroying documents related to UFO investigations because they would have taken up too much filing space."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/earth-matters/space/stories/fbi-opens-online-vault-revealing-ufo-roswell-files?page=4>