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