Were M2 , M4 , M5 , and M6 founded by M3 and founded by M1 's American producer
SELECT count(*) WHERE {
?x0 ns:film.producer.film|ns:film.production_company.films M1 .
?x0 ns:people.person.nationality ns:m.09c7w0 .
M2 ns:organization.organization.founders ?x0 .
M2 ns:organization.organization.founders M3 .
M4 ns:organization.organization.founders ?x0 .
M4 ns:organization.organization.founders M3 .
M5 ns:organization.organization.founders ?x0 .
M5 ns:organization.organization.founders M3 .
M6 ns:organization.organization.founders ?x0 .
M6 ns:organization.organization.founders M3
}