Was M1 founded by M2 , founded by M3 , and founded by a producer of M0
SELECT count(*) WHERE {
?x0 ns:film.producer.film|ns:film.production_company.films M0 .
M1 ns:organization.organization.founders ?x0 .
M1 ns:organization.organization.founders M2 .
M1 ns:organization.organization.founders M3
}