title: How to get the text for Tree in reverse way
body: <p>Please, Could anybody help me in order to extract the text from a Tree??</p>
  
  <p>e.g. : (NP (NP (DT the) (JJ main) (NN road)) (PP (IN of) (NP (NNP Rontau))))</p>
  
  <p>The text : "the main road of Rontau"</p>
  
  <p>I'm using stanford trees package.</p>