Was a film editor that a film directed by and produced by M1 starred and M4 starred M2
SELECT count(*) WHERE {
?x0 a ns:film.film .
?x0 ns:film.film.directed_by M1 .
?x0 ns:film.film.produced_by|ns:film.film.production_companies M1 .
M2 a ns:film.editor .
M2 ns:film.actor.film/ns:film.performance.film ?x0 .
M2 ns:film.actor.film/ns:film.performance.film M4
}