I’ve been scratching out an idea in Prolog. But I’m wondering how Elixir’s functional paradigm would handle this kind of knowledge base. Has anyone done similar work?

At first glance, these look like multi-headed functions:

/*
 * Crimes within the jurisdiction of the International Criminal Court.
 * 
 * https://world.public.law/rome_statute/article_5_crimes_within_the_jurisdiction_of_the_court
 */
crime(genocide).
crime(war_crime).
crime(crime_against_humanity).
crime(crime_of_aggression).


/*
 * A first, simple attempt at Protected Persons under
 * the Geneva Conventions of 1949.
 */
protected_by_geneva_convention(P) :- civilian(P).
protected_by_geneva_convention(P) :- prisoner_of_war(P).
protected_by_geneva_convention(P) :- medical_personnel(P).
protected_by_geneva_convention(P) :- religious_personnel(P).


/*
 * D = Defendant
 * V = Victim
 */

/*
 * Genocide
 * https://world.public.law/rome_statute/article_6_genocide
 */
criminal_liability(genocide, Statute, D, V) :-
	elements(Statute, D, V).

/*
 * War crimes
 * https://world.public.law/rome_statute/article_8_war_crimes
 */
criminal_liability(war_crime, Statute, D, V) :-
	protected_by_geneva_convention(V),
	international_conflict(D, V),
	elements(Statute, D, V).


elements(article_8_2_a_i, D, V) :-
	act(D, killed, V).

elements(article_8_2_a_ii, D, V) :-
	act(D, tortured, V).