!7

p {
  new HashSet<U> sentences;
  
  int n = 0, max = 1000;
  for (WikiPage page : indexedSimpleWikipedia_allPages()) {
    sentences.addAll(allToU(sentencesAfterLines(page.text)));
    if ((++n % 1000) == 0) print(n + " / " + l(sentences));
    if (n >= max) break;
  }
  
  Pair<L<U>> p = splitAccordingToPredicate(f mechList_isEnglishSentence_u, sentences);
  
  printAsciiHeading("Non-sentences");
  pnl(p.a);
  
  printAsciiHeading("Sentences");
  pnl(p.b);
}