Did a film editor that a film was directed by and was edited by found M1
SELECT count(*) WHERE {
?x0 a ns:film.editor .
?x0 ns:film.director.film ?x1 .
?x0 ns:film.editor.film ?x1 .
?x0 ns:organization.organization_founder.organizations_founded M1 .
?x1 a ns:film.film
}