Who edited a film that M2 wrote and executive produced
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:people.person .
?x0 ns:film.editor.film ?x1 .
?x1 a ns:film.film .
?x1 ns:film.film.executive_produced_by M2 .
?x1 ns:film.film.written_by M2
}