</h1>
    <form><textarea id="code" name="code">
PREFIX a: &lt;http://www.w3.org/2000/10/annotation-ns#>
PREFIX dc: &lt;http://purl.org/dc/elements/1.1/>
PREFIX foaf: &lt;http://xmlns.com/foaf/0.1/>

# Comment!

SELECT ?given ?family
WHERE {
  ?annot a:annotates &lt;http://www.w3.org/TR/rdf-sparql-query/> .
  ?annot dc:creator ?c .
  OPTIONAL {?c foaf:given ?given ;
               foaf:family ?family } .
  FILTER isBlank(?c)
}
</textarea></form>
    <script>
      var editor = CodeMirror.fromTextArea(docume