Was a film whose director executive produced M2 and M3 executive produced by M1
SELECT count(*) WHERE {
?x0 a ns:film.film .
?x0 ns:film.film.directed_by ?x1 .
?x0 ns:film.film.executive_produced_by M1 .
?x1 ns:film.producer.films_executive_produced M2 .
?x1 ns:film.producer.films_executive_produced M3
}