Were M3 and M4 founded by a film producer that M1 employed and M2 was founded by
SELECT count(*) WHERE {
?x0 a ns:film.producer .
?x0 ns:organization.organization_founder.organizations_founded M2 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
M3 ns:organization.organization.founders ?x0 .
M4 ns:organization.organization.founders ?x0
}