Was M1 written by M2 , written by a film editor , and written by M3 , M4 , M5 , M6 , and M7
SELECT count(*) WHERE {
?x0 a ns:film.editor .
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 .
M1 ns:film.film.written_by M5 .
M1 ns:film.film.written_by M6 .
M1 ns:film.film.written_by M7
}