Was a film edited by and written by a parent of M1
SELECT count(*) WHERE {
?x0 a ns:film.film .
?x0 ns:film.film.edited_by ?x1 .
?x0 ns:film.film.written_by ?x1 .
?x1 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child M1
}