<http://schema.org/headline>
"Google Mobile Ad Run Now $8 Billion, Up From $2.5 Billion In 2011"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.inquisitr.com/368848/google-mobile-ad-run-now-8-billion-up-from-2-5-billion-in-2011/>