<http://schema.org/alternativeHeadline>
"Search on Mobile Devices, QR Codes, Mobile &amp; Social: The Next Mobile Frontier : SES San Fran 2011 Live Coverage"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/mobile-search-sessanfran2011-13849.html>