Were M1 and M2 written by and directed by a film 's editor 's sibling
SELECT count(*) WHERE {
?x0 ns:people.person.sibling_s/ns:people.sibling_relationship.sibling|ns:fictional_universe.fictional_character.siblings/ns:fictional_universe.sibling_relationship_of_fictional_characters.siblings ?x1 .
?x1 ns:film.editor.film ?x2 .
?x2 a ns:film.film .
FILTER ( ?x0 != ?x1 ) .
M1 ns:film.film.directed_by ?x0 .
M1 ns:film.film.written_by ?x0 .
M2 ns:film.film.directed_by ?x0 .
M2 ns:film.film.written_by ?x0
}