static void ai_spec_whatIsXInY(S s) {
  new Matches m;
  if (!flexMatchIC("What is * (in|of) *", unquote(s), m)) ret;
  S elem = m.get(0), thing = m.get(2);
  
  // trigger required speculations
  
  post(s, "possibly related to:", elem);
  post(s, "possibly related to:", thing);
  ai_triggerSpeculationOn(thing);
  
  // harvest answers
  for (S text : takeFirst(ai_spec_maxAnswersToReturn(), ai_texts("$X", "is " + elem + " in", thing)))
    post(quote(text), "answers", s);
}