% Lab 3 (AI based family questions)

:- consult('lab2/lab2rels.pl'). % you may need to change this link here

sister_list(X,L) :- setof(Y, sister(Y,X), L).

:- op(700, xfy, are).
:- op(600, fx, the).
:- op(500, fx, sisters).
:- op(400, fx, of).

Who are the sisters of X:- sister_list(X, Who).