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