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