Did a person edit M1 , executive produce M2 , and executive produce a film
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x0 ns:film.editor.film M1 .
?x0 ns:film.producer.films_executive_produced ?x1 .
?x0 ns:film.producer.films_executive_produced M2 .
?x1 a ns:film.film
}