Did M1 star M2 and M3 and star a founder and employee of M0
SELECT count(*) WHERE {
?x0 ns:organization.organization_founder.organizations_founded M0 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
M1 ns:film.film.starring/ns:film.performance.actor ?x0 .
M1 ns:film.film.starring/ns:film.performance.actor M2 .
M1 ns:film.film.starring/ns:film.performance.actor M3
}