fairly experimental parser for HTML 'microdata'

 Resource Description Framework (RDF) is a standard model
 for data interchange on the Web.
 .
 Microdata is an experimental metadata format,
 not in wide use,
 for extending HTML5 to support RDF.
 .
 HTML::HTML5::Microdata::Parser is a Perl library
 providing a flexible microdata parser
 for working with an RDF::Trine::Model
 that can be queried with SPARQL.