<http://schema.org/headline>
"Alzheimer's Disease 'Spreads Like An Infection' By 'Jumping' Around The Brain"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.huffingtonpost.co.uk/2012/02/03/alzheimers-disease-spreads-like-infection-brain-cell_n_1252080.html>