// Returns Path-enclosed trees of Moschitti 2004 (ACL)
@Override
public List<Feature> extract(JCas jcas, IdentifiedAnnotation arg1, IdentifiedAnnotation arg2) throws AnalysisEngineProcessException {
List<Feature> features = new ArrayList<Feature>();
// first get the root and print it out...
TopTreebankNode root = AnnotationTreeUtils.getTreeCopy(jcas, AnnotationTreeUtils.getAnnotationTree(jcas, arg1));
// SimpleTree tempClone = TreeExtractor.getSimpleClone(root);
// features.add(new Feature("TK_FULL", tempClone.toString()));
TreebankNode t1 = AnnotationTreeUtils.insertAnnotationNode(jcas, root, arg1, "ARG1");
TreebankNode t2 = AnnotationTreeUtils.insertAnnotationNode(jcas, root, arg2, "ARG2");