Who edited a film , directed M1 , and wrote M3 's sequel
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:people.person .
?x0 ns:film.director.film M1 .
?x0 ns:film.editor.film ?x1 .
?x0 ns:film.writer.film ?x2 .
?x1 a ns:film.film .
?x2 ns:film.film.prequel M3
}