Were M2 and M4 produced by M3 , executive produced by M0 's editor , and produced by a film editor
SELECT count(*) WHERE {
?x0 ns:film.editor.film M0 .
?x1 a ns:film.editor .
M2 ns:film.film.executive_produced_by ?x0 .
M2 ns:film.film.produced_by|ns:film.film.production_companies ?x1 .
M2 ns:film.film.produced_by|ns:film.film.production_companies M3 .
M4 ns:film.film.executive_produced_by ?x0 .
M4 ns:film.film.produced_by|ns:film.film.production_companies ?x1 .
M4 ns:film.film.produced_by|ns:film.film.production_companies M3
}