<http://schema.org/alternativeHeadline>
"Researchers sought to gauge how often people had 'intrusive thoughts,' like an image of their house on fire or jumping off a ledge."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/health/fitness-well-being/stories/most-people-have-unwanted-worrying-thoughts>