static void ai_spec_howMany(S question) {
  S bla = web_text(first(ai_search_dollarX(question, "counts instances of", "$X")));
  if (bla == null) ret;
  print("bla=" + quote(bla));
  int count =
      l(ai_search_dollarX("$X", "is", bla))
    + l(ai_search_dollarX("$X", "probably is", bla));
  ai_postTriple(str(count), "answers", question);
}