public static List<String> tokenizeSents(String sents){
		  Reader reader = new StringReader(sents);
		  DocumentPreprocessor dp = new DocumentPreprocessor(reader);

		  List<String> sentenceList = new LinkedList<String>();
		  Iterator<List<HasWord>> it = dp.iterator();
		  while (it.hasNext()) {
		     StringBuilder sentenceSb = new StringBuilder();
		     List<HasWord> sentence = it.next();
		     for (HasWord token : sentence) {
		        if(sentenceSb.length()>1) {
		           sentenceSb.append(" ");
		        }
		        sentenceSb.append(token);
		     }
		     sentenceList.add(sentenceSb.toString());
		  }
		  return sentenceList;
	  }