Did M3 star a film director that M1 was founded by and M2 was founded by
SELECT count(*) WHERE {
?x0 a ns:film.director .
?x0 ns:organization.organization_founder.organizations_founded M1 .
?x0 ns:organization.organization_founder.organizations_founded M2 .
M3 ns:film.film.starring/ns:film.performance.actor ?x0
}