What did M0 found , a film producer found , and M1 and M2 found
SELECT DISTINCT ?x0 WHERE {
?x0 ns:organization.organization.founders ?x1 .
?x0 ns:organization.organization.founders M0 .
?x0 ns:organization.organization.founders M1 .
?x0 ns:organization.organization.founders M2 .
?x1 a ns:film.producer
}