*/
private static String glueSentence(List<HasWord> sentence) {
StringBuilder result = new StringBuilder();
if ( ! sentence.isEmpty()) {
HasWord word = sentence.get(0);
String s = word.word();
result.append(s);
for (int i = 1, sz = sentence.size(); i < sz; i++) {
word = sentence.get(i);
s = word.word();
result.append(" ").append(s);