<?xml version="1.0" encoding="utf-8"?>
<is:stuff xmlns:is="http://asynchronous.org/rx/ns/2005/01/is#"
          xmlns:ex="http://example.org/stuff/1.0/"
          xmlns:dc="http://purl.org/dc/elements/1.1/"
          xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
          >
  <is:aDescription is:a="http://example.org/stuff/1.0/measurement">
    <dc:date is:ofDatatype="http://www.w3.org/2001/XMLSchema#dateTime">2005-01-16T13:38:00-05:00</dc:date>
    <ex:height is:ofDatatype="http://www.w3.org/2001/XMLSchema#float">1.759</ex:height>
    <ex:weight is:ofDatatype="http://www.w3.org/2001/XMLSchema#float">78.42</ex:weight>
  </is:aDescription>
</is:stuff>