Was M1 founded by M2 , M3 , M4 , and M5 , founded by M6 , and founded by a production company 's employee
SELECT count(*) WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x1 a ns:film.production_company .
M1 ns:organization.organization.founders ?x0 .
M1 ns:organization.organization.founders M2 .
M1 ns:organization.organization.founders M3 .
M1 ns:organization.organization.founders M4 .
M1 ns:organization.organization.founders M5 .
M1 ns:organization.organization.founders M6
}