<http://schema.org/headline>
"Google Celebrates the 50th Anniversary of MLK&amp;#039;s &amp;quot;I Have a Dream Speech&amp;quot;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.complex.com/pop-culture/2013/08/google-martin-luther-king-i-have-a-dream-speech>