Was M1 produced by a film editor , edited by M3 , and executive produced by M2
SELECT count(*) WHERE {
?x0 a ns:film.editor .
M1 ns:film.film.edited_by M3 .
M1 ns:film.film.executive_produced_by M2 .
M1 ns:film.film.produced_by|ns:film.film.production_companies ?x0
}