title: Create an xml file that wille be converted to an owl file (ontology)
body: <p>I have created an ontology (that containes classes, sub classes and properties) and now, i would like to creat an xml file to save information and this file will be converted to an owl file (our ontology).</p>
  
  <p>How can I create an xml file, I mean the structor of this file ?</p>
  
  <p>Thank you.</p>