Foo <html:b xmlns:html="http://www.w3.org/1999/xhtml" html:a="b">bar<rdf:Thing xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"><a:b xmlns:a="foo:"></a:b>here<a:c xmlns:a="foo:"></a:c></rdf:Thing></html:b> baz <html:i xmlns:html="http://www.w3.org/1999/xhtml">more</html:i>