Did M1 , M2 , M3 , and M4 found a writer of M0
SELECT count(*) WHERE {
?x0 ns:film.writer.film M0 .
M1 ns:organization.organization_founder.organizations_founded ?x0 .
M2 ns:organization.organization_founder.organizations_founded ?x0 .
M3 ns:organization.organization_founder.organizations_founded ?x0 .
M4 ns:organization.organization_founder.organizations_founded ?x0
}