Did a director and writer of M0 and M1 found a film producer
SELECT count(*) WHERE {
?x0 ns:film.director.film M0 .
?x0 ns:film.director.film M1 .
?x0 ns:film.writer.film M0 .
?x0 ns:film.writer.film M1 .
?x0 ns:organization.organization_founder.organizations_founded ?x1 .
?x1 a ns:film.producer
}