@prefix md: <http://www.w3.org/ns/md#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfa: <http://www.w3.org/ns/rdfa#> .

<0071.html> md:item (
  [ a <http://contextual.unordered/>;
    <http://www.w3.org/ns/md?type=http://contextual.unordered/&prop=baz> "FooBar"]);
   rdfa:usesVocabulary <http://contextual.unordered/> .