Were M4 and M5 produced by a film distributor and executive produced by a British film editor that executive produced M1
SELECT count(*) WHERE {
?x0 a ns:film.editor .
?x0 ns:film.producer.films_executive_produced M1 .
?x0 ns:people.person.nationality ns:m.07ssc .
?x1 a ns:film.film_distributor .
M4 ns:film.film.executive_produced_by ?x0 .
M4 ns:film.film.produced_by|ns:film.film.production_companies ?x1 .
M5 ns:film.film.executive_produced_by ?x0 .
M5 ns:film.film.produced_by|ns:film.film.production_companies ?x1
}