static Set<S> knownNounPhrases_set;

static Set<S> knownNounPhrases() {
  lock downloadLock();
  if (knownNounPhrases == null)
    knownNounPhrases_set = new TreeSet(allToLower(tlft(loadSnippet(#1010408))));
  ret knownNounPhrases_set;
}