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