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:- object(grades,
	imports(assumptions)).

	:- info([
		version is 1:0:0,
		author is 'Example posted on reddit on a topic about Harrop clauses.',
		date is 2014-11-16,
		comment is 'Compute grades using linear assumptions.'
	]).

	:- public(grade/1).
	grade(Person) :-
		take(Person, german),
		take(Person, french).
	grade(Person) :-
		take(Person, german),
		take(Person, italian).

	:- private(take/2).
	:- dynamic(take/2).
	take(hans, french).

:- end_object.