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