<http://schema.org/alternativeHeadline>
"Pew: One in three Americans owns a tablet, one in four owns an e-reader, and 43% have one or the other"^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/insider/2013/10/18/pew-one-three-americans-owns-tablet-one-four-owns-e-reader-43-one/>