What film producer was a film editor that M2 and M3 were written by and were edited by
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.editor .
?x0 a ns:film.producer .
?x0 ns:film.editor.film M2 .
?x0 ns:film.editor.film M3 .
?x0 ns:film.writer.film M2 .
?x0 ns:film.writer.film M3
}