Warning, /education/marble/tests/data/schema.kml is written in an unsupported language. File is not indexed.

 <?xml version="1.0" encoding="UTF-8"?>
 <kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2">
     <Document>
         <Schema id="id002f" name="Flight">
             <SimpleField name="journeyTime" type="float">
                 <displayName>The expected time(hh.mm) of journey</displayName>
             </SimpleField>
         </Schema>
     </Document>
 </kml>