I think for that kind of thing, Prolog would be sufficient. Lean is more powerful, but it requires you to supply proofs - Prolog can just automatically run infe

I think for that kind of thing, Prolog would be sufficient. Lean is more powerful, but it requires you to supply proofs - Prolog can just automatically run inferences. (Although I wouldn't be surprised if somebody had already recreated something like Prolog in Lean with a tactic that does more or less what the Prolog interpreter does)