Were M2 and M6 executive produced by M3 and M4 , produced by a Canadian film director , and executive produced by M5
SELECT count(*) WHERE {
?x0 a ns:film.director .
?x0 ns:people.person.nationality ns:m.0d060g .
M2 ns:film.film.executive_produced_by M3 .
M2 ns:film.film.executive_produced_by M4 .
M2 ns:film.film.executive_produced_by M5 .
M2 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
M6 ns:film.film.executive_produced_by M3 .
M6 ns:film.film.executive_produced_by M4 .
M6 ns:film.film.executive_produced_by M5 .
M6 ns:film.film.produced_by|ns:film.film.production_companies ?x0
}