svoid test_RecursiveProbabilisticParser1() {
  new RecursiveProbabilisticParser1 p;
  p.loadRules("<thing> has a <thing> => <sentence> => has($1, $2)");
  assertEqualsVerbose(ll([[has("the farmer", "pig")]]),
    p.parse("the farmer has a pig"));
    
  test_RecursiveProbabilisticParser1_2();
}

svoid test_RecursiveProbabilisticParser1_2() {
  new RecursiveProbabilisticParser1 p;
  p.loadRules([[
    "Ein/eine/der/die/das <ding> führt (nach/in/hin zu/ins) <ort>" => satz => $1 leads to $2
    "zimmer <zimmername>" => zimmer => room $1
    "der/die/dem/das/den <nomen>" => nomen => the $1
  ]]);
  p.sentenceClass = "satz";
  p.useRoundBrackets = true;
  assertEqualsVerbose(ll("(Haustür) leads to (the (room (Flur)))"), p.parse("Die Haustür führt in das Zimmer Flur"));
}

svoid test_RecursiveProbabilisticParser1_3() {
  new RecursiveProbabilisticParser1 p;
  p.loadRules([[
    "vom/... <ort> kommt/gelangt man <füller> in/nach/... <ort>" => satz => $1 connects to $2
    "zimmer <zimmername>" => zimmer => room $1
    "der/die/dem/das/den <nomen>" => nomen => the $1
  ]]);
  p.sentenceClass = "satz";
  p.useRoundBrackets = true;
  assertEqualsVerbose(ll(""), p.parse("Vom Flur kommt man (auch) in das Zimmer GästeWC"));
}