Were M2 and M3 edited by a screenwriter and edited by a production company 's founder and employee
SELECT count(*) WHERE {
?x0 ns:organization.organization_founder.organizations_founded ?x1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x1 a ns:film.production_company .
?x2 a ns:film.writer .
M2 ns:film.film.edited_by ?x0 .
M2 ns:film.film.edited_by ?x2 .
M3 ns:film.film.edited_by ?x0 .
M3 ns:film.film.edited_by ?x2
}