String ns = Namespaces.KARMA;
autoOntology.setNsPrefix("karma", ns);
OntClass topClass = autoOntology.createClass( ns + worksheet.getTitle().replaceAll(" ", "_")); // replace blank spaces with undrscore
for (HNode hNode : sortedLeafHNodes){
DatatypeProperty dp = autoOntology.createDatatypeProperty(ns+hNode.getColumnName().trim().replaceAll(" ", "_"));
dp.addDomain(topClass);
dp.addRange(XSD.xstring);
}
// OntClass thingClass = autoOntology.createClass(Uris.THING_URI);
ObjectProperty op = autoOntology.createObjectProperty(ns + "relatedTo");