<rdf:RDF
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:ns1="http://metadb.riken.jp/db/mgi_rdf/"
    xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
  <rdfs:Class rdf:about="http://metadb.riken.jp/db/mgi_rdf/MouseChromosome">
    <rdfs:label xml:lang="en">Mouse chromosome</rdfs:label>
  </rdfs:Class>
</rdf:RDF>