Simpleparse and web service both produce nonsense:
<html xmlns:rdfs= "http://www.w3.org/2000/01/rdf-schema#" xmlns="http://www.w3.org/1999/xhtml">
<body>
<p id='#xy' about='#xy' property='rdfs:label'>
<em rel='skos:subject' resource='[dbpc:Software]'>THIS</em>
is my SW-label
</p>
</body>
</html>
I strongly suspect an xml library issue.