<http://schema.org/target>
"android-app://com.guardian/http/www.theguardian.com/books/gallery/2012/aug/16/history-flight-pictures"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.theguardian.com/books/gallery/2012/aug/16/history-flight-pictures?picture=394532597>