Was a producer and costume designer of M2 a person that M1 starred and was edited by
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x0 ns:film.actor.film/ns:film.performance.film M1 .
?x0 ns:film.editor.film M1 .
?x0 ns:film.film_costumer_designer.costume_design_for_film M2 .
?x0 ns:film.producer.film|ns:film.production_company.films M2
}