Did M1 executive produce M2 and M3 , executive produce M4 , and executive produce a film
SELECT count(*) WHERE {
?x0 a ns:film.film .
M1 ns:film.producer.films_executive_produced ?x0 .
M1 ns:film.producer.films_executive_produced M2 .
M1 ns:film.producer.films_executive_produced M3 .
M1 ns:film.producer.films_executive_produced M4
}