Was M2 executive produced by M3 and executive produced by a French film editor
SELECT count(*) WHERE {
?x0 a ns:film.editor .
?x0 ns:people.person.nationality ns:m.0f8l9c .
M2 ns:film.film.executive_produced_by ?x0 .
M2 ns:film.film.executive_produced_by M3
}