docs: private static String deduceTag(String w) {
      String word = w.toLowerCase();
      if (word.endsWith("ing")) {
        return "VBG";
      } else if (word.endsWith("d") || word.endsWith("t")) {
        return "VBN";
      } else if (word.endsWith("s")) {
        return "VBZ";
      } else if (word.equals("to")) {
        return "TO";
      } else {
        return "VB";
      }
    }