Was M3 written by a costume designer of M0 and M1 and edited by a person
SELECT count(*) WHERE {
?x0 ns:film.film_costumer_designer.costume_design_for_film M0 .
?x0 ns:film.film_costumer_designer.costume_design_for_film M1 .
?x1 a ns:people.person .
M3 ns:film.film.edited_by ?x1 .
M3 ns:film.film.written_by ?x0
}