code: public Iterator<Document> read(Reader docReader) {
          try {
              DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
              DocumentBuilder db = dbf.newDocumentBuilder();
              org.w3c.dom.Document currentXmlDoc = db.parse(
                      new InputSource(docReader));
              return new SenseEvalIterator(
                      currentXmlDoc.getElementsByTagName("instance"));
          } catch (javax.xml.parsers.ParserConfigurationException pce) {
              pce.printStackTrace();
          } catch (org.xml.sax.SAXException saxe) {
              saxe.printStackTrace();
          } catch (IOException ioe) {
              throw new IOError(ioe);
          }
          return null;
      }
docs: {@inheritDoc}