static void ai_spec_whatIsXInY(S s) {
  new Matches m;
  if (!flexMatchIC("What is * in *", unquote(s), m)) ret;
  S elem = m.get(0), thing = m.get(1);
  for (S text : takeFirst(ai_spec_maxAnswersToReturn(), ai_texts("$X", "is " + elem + " in ", thing))
    post(quote(text), "answers", s);
}