Test output from null atomtype checking of PDB CIF-HET dictionary

test.rdf

<rdf:RDF
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:j.0="http://cpt/p/" > 
  <rdf:Description rdf:about="http://cpt/r/">
    <j.0:HET rdf:resource="http://cpt/r/TBE"/>
    <j.0:HET rdf:resource="http://cpt/r/TBD"/>
  </rdf:Description>
  <rdf:Description rdf:about="http://cpt/r/TBD">
    <j.0:hasHeight2Sig>[B]([H][H][H][P]([O][O][O]))</j.0:hasHeight2Sig>
    <j.0:hasAtomSymbol>B1A</j.0:hasAtomSymbol>
    <j.0:hasAtom rdf:resource="http://cpt/r/TBD"/>
    <j.0:hasHeight2Sig>[P]([B]([H][H][H])[O]([C])[O]([H])[O]([P]))</j.0:hasHeight2Sig>
    <j.0:hasAtomSymbol>PA</j.0:hasAtomSymbol>
    <j.0:hasAtomID>TBD</j.0:hasAtomID>
  </rdf:Description>
</rdf:RDF>