Was M3 directed by and edited by a Spanish editor of M1 and M2
SELECT count(*) WHERE {
?x0 ns:film.editor.film M1 .
?x0 ns:film.editor.film M2 .
?x0 ns:people.person.nationality ns:m.06mkj .
M3 ns:film.film.directed_by ?x0 .
M3 ns:film.film.edited_by ?x0
}