static void ai_spec_moveToMiddle(Web web) {
  for (WebRelation r : web_relationObjects(web)) {
    S rel = web_text(r), b = web_text(r.b);
    for (WebRelation mtm : indexedRelations_verified("move to middle")) {
      L<S> l = splitAtSlash(web_text(mtm.a));
      L<S> lReplacement = splitAtSlash(web_text(mtm.b));
      //print("Trying " + sfu(l) + " -> " + sfu(lReplacement) + " on " + rel + " / " + b);
      continue unless l(l) == 2 && l(lReplacement) == 2;
      new Matches m;
      S prefix = second(l) + " ";
      continue unless eqic(first(l), rel) && swic(b, prefix, m);
      //print("Match.");
      
      ai_postTriple(web_text(r.a), first(lReplacement),
        second(lReplacement) + " " + m.rest());
    }
  }
}