Was a person that M2 's sequel was edited by and was executive produced by a film editor
SELECT count(*) WHERE {
?x0 a ns:film.editor .
?x0 a ns:people.person .
?x0 ns:film.editor.film ?x1 .
?x0 ns:film.producer.films_executive_produced ?x1 .
?x1 ns:film.film.prequel M2
}