code: package edu.stanford.nlp.sentidev;
  
  import edu.stanford.nlp.ling.CoreAnnotation;
  
  import edu.stanford.nlp.trees.Tree;
  
  /**
   * Annotations specific to the Sentiment project.  In case there are
   * other projects that use the same RNN machinery, including the RNN
   * core annotations, this lets a sentence have a tree attached where
   * that tree specifically has the sentiment annotations.
   *
   * @author John Bauer
   */
  public class SentimentCoreAnnotations {
  
  	/**
  	 * A tree which contains the annotations used for the Sentiment
  	 * task.  After forwardPropagate has been called, the Tree will have
  	 * prediction, etc attached to it.
  	 */
  	public static class AnnotatedTree implements CoreAnnotation<Tree> {
  		public Class<Tree> getType() {
  			return Tree.class;
  		}
  	}
  
  
  	/**
  	 * The final label given for a sentence.  Set by the
  	 * SentimentAnnotator and used by various forms of text output
  	 */
  	public static class ClassName implements CoreAnnotation<String> {
  		public Class<String> getType() {
  			return String.class;
  		}
  	}
  }
  
  