Was M1 founded by M2 , M3 , and M4 , founded by M5 , M6 , and M7 , and founded by a actor
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 .
M1 ns:organization.organization.founders M5 .
M1 ns:organization.organization.founders M6 .
M1 ns:organization.organization.founders M7
}