<?xml version="1.0" encoding="utf-8"?>
<rdf:RDF
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:datmm="http://id.nlm.nih.gov/datmm/">
  <rdf:Description rdf:about="">
  </rdf:Description>
</rdf:RDF>