static void ai_spec_answerPattern(S q) {
  if (!ai_postingInSubSpace()) ret;
  for (Pair<S> p : ai_texts_xy("$X", "is an answer pattern for", "$Y")) {
    SS match = matchDollarVarsIC(unquote(p.b), q);
    if (match != null)
      post(".", "Look for answer pattern", p.a);
  }
}