Was a production company whose founder edited M0 , M1 , and M2 M3
SELECT count(*) WHERE {
?x0 ns:film.editor.film M0 .
?x0 ns:film.editor.film M1 .
?x0 ns:film.editor.film M2 .
M3 a ns:film.production_company .
M3 ns:organization.organization.founders ?x0
}