Did M3 , M4 , M5 , and M6 edit a film whose writer was employed by M1 and founded M2
SELECT count(*) WHERE {
?x0 a ns:film.film .
?x0 ns:film.film.written_by ?x1 .
?x1 ns:organization.organization_founder.organizations_founded M2 .
?x1 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
M3 ns:film.editor.film ?x0 .
M4 ns:film.editor.film ?x0 .
M5 ns:film.editor.film ?x0 .
M6 ns:film.editor.film ?x0
}