<https://halsteadpress.com.au/site/billy-be-safe-a-big-adventure-for-little-readers/#primaryimage>
<http://schema.org/height>
"800"^^<http://www.w3.org/2001/XMLSchema#integer>
<https://halsteadpress.com.au/site/billy-be-safe-a-big-adventure-for-little-readers/>