@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix p: <foo://bla/names#> .
@prefix : <foo://bla/persons/> .
:john a p:Person ;
  p:nickname "John \"The Hero\" Doe";
  p:homepage """<ht:html xmlns:ht="http://www.w3.org/1999/xhtml">
                  <ht:body><ht:li>bla</ht:li></ht:body>
                </ht:html>"""^^rdf:XMLLiteral.