Was a French German writer of M1 and M2 a film editor
SELECT count(*) WHERE {
?x0 a ns:film.editor .
?x0 ns:film.writer.film M1 .
?x0 ns:film.writer.film M2 .
?x0 ns:people.person.nationality ns:m.0345h .
?x0 ns:people.person.nationality ns:m.0f8l9c
}