Prolog + Datalog? Prolog should even parse JSON without 3rd party libs with minimal fuss using just its integrated parser construction facilities (eg. the `op`

Prolog + Datalog? Prolog should even parse JSON without 3rd party libs with minimal fuss using just its integrated parser construction facilities (eg. the `op` built-in predicate). Prolog won't come with reasoners for the description logic profiles supported by OWL 2 (EL, RL), but can be used to implement such reasoners if needed.