<http://schema.org/target>
"android-app://com.guardian/http/www.theguardian.com/commentisfree/2013/dec/11/3d-printing-not-yet-a-new-industrial-revolution-but-its-impact-will-be-huge"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.theguardian.com/commentisfree/2013/dec/11/3d-printing-not-yet-a-new-industrial-revolution-but-its-impact-will-be-huge>