/** Demonstrates usage of isQueryTrue api function. */
 protected void demo13() throws IOException, UnknownHostException, CycApiException {
   Log.current.println("Demonstrating isQueryTrue api function.\n");
   CycFormulaSentence gaf =
       cycAccess.makeCycSentence("(#$likesAsFriend #$BillClinton #$JimmyCarter)");
   CycFort mt = cycAccess.getKnownConstantByName("PeopleDataMt");
   InferenceParameters queryProperties = new DefaultInferenceParameters(cycAccess);
   boolean isQueryTrue = cycAccess.isQueryTrue(gaf, mt, queryProperties);
   if (isQueryTrue)
     Log.current.println("\nThe assertion\n" + gaf + "\nis true in the " + mt.cyclify());
   else
     Log.current.println(
         "\nThe assertion\n" + gaf + "\nis not known to be true in the " + mt.cyclify());
 }