Was M4 written and edited by a screenwriter that was employed by M1 and founded M2 and M3
SELECT count(*) WHERE {
?x0 a ns:film.writer .
?x0 ns:organization.organization_founder.organizations_founded M2 .
?x0 ns:organization.organization_founder.organizations_founded M3 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
M4 ns:film.film.edited_by ?x0 .
M4 ns:film.film.written_by ?x0
}