What did a film producer write , M1 , M2 , and M3 direct , and M0 executive produce
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.film.directed_by M1 .
?x0 ns:film.film.directed_by M2 .
?x0 ns:film.film.directed_by M3 .
?x0 ns:film.film.executive_produced_by M0 .
?x0 ns:film.film.written_by ?x1 .
?x1 a ns:film.producer
}