RDF metadata issue

I am trying to attach some custom RDF metadata to a TextSection...
here is a snippet of code that I use to attach the RDF metadata :

<code>
Dim odoc
odoc = thisComponent

Dim osection
osection = odoc.getTextSections().getByName("Section1")

Dim docText
docText= odoc.getText()

UriService = com.sun.star.rdf.URI
UriSService = com.sun.star.rdf.URIs
LiteralService = com.sun.star.rdf.Literal

Dim uriAnx
uriAnx = UriService.create("http://editor.bungeni.org/anx" )

Dim rdfMetafile
rdfMetafile = odoc.addMetadataFile("meta/meta.rdf", Array(uriAnx))

Dim rdfGraph
rdfGraph = odoc.getRDFRepository().getGraph(rdfMetafile)

Dim uriSecType, litSecType
uriSecType = UriService.create("http://editor.bungeni.org/anx/sectionType")
litSecType = LiteralService.create("Clause")
rdfGraph.addStatement(osection, uriSecType, litSecType)

Dim uriSecUUID, litSecUUID
uriSecUUID = UriService.create("http://editor.bungeni.org/anx/sectionUUID")
litSecUUID = LiteralService.create("1723-18388-38383-38383")
rdfGraph.addStatement(osection, uriSecUUID, litSecUUID)

</code>

The problem is that the metadata looks like this :

<code>

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
  <rdf:Description rdf:about="../content.xml#id322214793">
    <ns1:sectionType
xmlns:ns1="http://editor.bungeni.org/anx/">Clause</ns1:sectionType>
    <ns2:sectionUUID
xmlns:ns2="http://editor.bungeni.org/anx/">1723-18388-38383-38383</ns2:sectionUUID>
  </rdf:Description>
</rdf:RDF>

</code>

Notice how the ns1 and ns2 namespace prefixes are duplicated ....
But i want it to look like this --

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
  <rdf:Description rdf:about="../content.xml#id322214793"
xmlns:anx="http://editor.bungeni.org/anx" >
    <anx:sectionType>Clause</anx:sectionType>
    <anx:sectionUUID>1723-18388-38383-38383</anx:sectionUUID>
  </rdf:Description>
</rdf:RDF>

How do i do this ? ... I tried using various combinations using
createNS() instead of create() but couldnt get it to look like this
....

Ashok