Is JPX a complete Prolog interpreter?
No. JPX is just an API. JPX does borrow Prolog’s syntax for defining a knowledge base (a set facts and rules). And, as noted above, JPX does have a built-in inference engine based on the Warren Abstract Machine. Unlike Prolog, JPX does not have a built-in command-line interface and does not implement all the features and predicates found in Standard Prolog.