Was M4 a production company whose founder founded M2 and M3 , was employed by M0 , and was employed by M1
SELECT count(*) WHERE {
?x0 ns:organization.organization_founder.organizations_founded M2 .
?x0 ns:organization.organization_founder.organizations_founded M3 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
M4 a ns:film.production_company .
M4 ns:organization.organization.founders ?x0
}