Was a person that directed M2 and M3 M1 's costume designer , writer , and editor
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x0 ns:film.director.film M2 .
?x0 ns:film.director.film M3 .
?x0 ns:film.editor.film M1 .
?x0 ns:film.film_costumer_designer.costume_design_for_film M1 .
?x0 ns:film.writer.film M1
}