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