static S ai_standardAnswerSF_triple_dollarVars(T3<S> t) {
  for (Pair<S> p : ai_texts_verified_dollarXY("$X", "is a good standard function for user triple", "$Y")) {
    SS match = simpleMatchTriple_dollarVars(ai_parseTriple(p.b), t);
    if (match != null)
      ret smartBotEval(assertIdentifier(p.a) + "(" + tripleToJava(t) + ")");
  }
  null;
}