static void ai_analyzeSubSpace(AI_SubSpace subSpace) {
  print("Have subspace with " + nWeb(subSpace.webs));
  print("Sources: " + struct(collectUnique(subSpace.webs, 'source)));
  
  Web seedWeb = first(subSpace.webs);
  T3<S> seed = webToTriple(seedWeb);
  print("Seed: " + ai_renderTriple(seed));
  T3<S> goal = ai_parseTriple(ai_text(subSpace, "_goal", "is", "$X"));
  print("Goal: " + ai_renderTriple(goal));
  Web solution = webNodeToWeb(last(webs_tripleSearch_dollarX(subSpace.webs, goal)));
  print("Solution: " + webToStringShort(solution));
  if (solution == null) ret;
  print("Solution source: " + solution.source);
}