<http://schema.org/target>
"android-app://com.guardian/https/www.theguardian.com/books/gallery/2013/feb/21/jane-austen-stamps-pictures"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.theguardian.com/books/gallery/2013/feb/21/jane-austen-stamps-pictures?picture=404421907>