Which executive producer of M0 , M1 , and M2 founded a film producer
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.producer.films_executive_produced M0 .
?x0 ns:film.producer.films_executive_produced M1 .
?x0 ns:film.producer.films_executive_produced M2 .
?x0 ns:organization.organization_founder.organizations_founded ?x1 .
?x1 a ns:film.producer
}