Were M1 , M2 , and M3 founded by a film producer 's founder
SELECT count(*) WHERE {
?x0 ns:organization.organization_founder.organizations_founded ?x1 .
?x1 a ns:film.producer .
M1 ns:organization.organization.founders ?x0 .
M2 ns:organization.organization.founders ?x0 .
M3 ns:organization.organization.founders ?x0
}