/**
   * Lemmatise a phrase or word. If a phrase, only lemmatise the most RHS word.
   *
   * @param value
   * @return
   */
  public String normalise(String value) {
    if (value.indexOf(" ") == -1
        || value.endsWith(" s")
        || value.endsWith(
            "'s")) // if string is a single word, or it is in "XYZ's" form where the ' char has been
                   // removed
    return lemmatizer.lemmatize(value, 1).trim();

    String part1 = value.substring(0, value.lastIndexOf(" "));
    String part2 = lemmatizer.lemmatize(value.substring(value.lastIndexOf(" ") + 1), 1);
    return part1 + " " + part2.trim();
  }
 /**
  * @param value original word
  * @param pos the part of speech of the last word
  * @return the lemma of original word
  */
 public String getLemma(String value, String pos) {
   int POS = tagLookUp.get(pos);
   if (POS == 0) return lemmatizer.lemmatize(value);
   else return lemmatizer.lemmatize(value, POS);
 }