Was M1 founded by M2 , founded by M3 , founded by a actor , and founded by M4
SELECT count(*) WHERE {
?x0 a ns:film.actor .
M1 ns:organization.organization.founders ?x0 .
M1 ns:organization.organization.founders M2 .
M1 ns:organization.organization.founders M3 .
M1 ns:organization.organization.founders M4
}