Was M1 executive produced by M2 , directed by M3 , and executive produced by a film editor
SELECT count(*) WHERE {
?x0 a ns:film.editor .
M1 ns:film.film.directed_by M3 .
M1 ns:film.film.executive_produced_by ?x0 .
M1 ns:film.film.executive_produced_by M2
}