Was M4 's founder employed by a film producer , employed by M0 and M1 , and employed by M2 and M3
SELECT count(*) WHERE {
?x0 ns:organization.organization_founder.organizations_founded M4 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
?x1 a ns:film.producer
}