Availability:
:- use_module(library(http/json_convert)).
[det]prolog_to_json(:Term,
-JSONObject):- json_object/1
declarations. If a json_object/1
declaration declares a field of type
boolean, commonly used truth-values in Prolog are converted
to JSON booleans. Boolean translation accepts one of true,
on, 1, @true, false, fail, off
or 0, @false.