Were M1 , M5 , and M6 written by M2 and M3 , written by a film producer , and written by M4
SELECT count(*) WHERE {
?x0 a ns:film.producer .
M1 ns:film.film.written_by ?x0 .
M1 ns:film.film.written_by M2 .
M1 ns:film.film.written_by M3 .
M1 ns:film.film.written_by M4 .
M5 ns:film.film.written_by ?x0 .
M5 ns:film.film.written_by M2 .
M5 ns:film.film.written_by M3 .
M5 ns:film.film.written_by M4 .
M6 ns:film.film.written_by ?x0 .
M6 ns:film.film.written_by M2 .
M6 ns:film.film.written_by M3 .
M6 ns:film.film.written_by M4
}