# coding=utf-8

id = 129
group = 'sets'
number = 36
visible = True
facts = None

solution = '''\
memb129(X, [X|_]).
memb129(X, [_|T]) :-
  memb129(X, T).

intersect([], _, []).
intersect([H|T], S2, [H|I]) :-
  memb129(H, S2), !,
  intersect(T, S2, I).
intersect([_|T], S2, I):-
  intersect(T, S2, I).
'''