What was a production company whose founder edited M1 and wrote M2 and M3
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.production_company .
?x0 ns:organization.organization.founders ?x1 .
?x1 ns:film.editor.film M1 .
?x1 ns:film.writer.film M2 .
?x1 ns:film.writer.film M3
}