RDFa Lite Attributes in Docbook 5.1

[Peter Fleck <peterfleck@gmail.com>]

Hi all,

I would like to populate my HTML output with Schema.org.

I've  been able to modify the inlines for obvious things like emails etc 
but at the block level I need to add the appropriate RDFa Lite 
Attributes to the XML (indicated here - 
http://www.docbook.org/tdg51/en/html/ref-elements.html#common.attributes).

My question is how to get the RDF attributes passed through to the HTML. 
Do I need to write a customization or is there a more obvious way?

Many thanks,

Peter