//compute "Debug.show valueDictionaryThunk xValueThunk"
//this is just (after inlining Debug.show d = d)
//valueDictionaryThunk xValueThunk
Node valueDictionaryThunk = recordDictionary.getValue(fieldName);
Node xValueThunk = x.getValue(fieldName);
Node ap = new NAp(valueDictionaryThunk, xValueThunk);
String apResult = (String)(executor.internalEvaluate(ap).getValue());
showResult.append(apResult);
}