Which producer of a film directed M1 and M2 , directed M3 and M4 , and edited M0
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.director.film M1 .
?x0 ns:film.director.film M2 .
?x0 ns:film.director.film M3 .
?x0 ns:film.director.film M4 .
?x0 ns:film.editor.film M0 .
?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
?x1 a ns:film.film
}