What did a person that wrote , directed , and edited M1 and M2 executive produce
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.film.executive_produced_by ?x1 .
?x1 a ns:people.person .
?x1 ns:film.director.film M1 .
?x1 ns:film.director.film M2 .
?x1 ns:film.editor.film M1 .
?x1 ns:film.editor.film M2 .
?x1 ns:film.writer.film M1 .
?x1 ns:film.writer.film M2
}