Were M2 and M3 written by and produced by a actor whose sibling edited and executive produced M1
SELECT count(*) WHERE {
?x0 a ns:film.actor .
?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 M1 .
?x1 ns:film.producer.films_executive_produced M1 .
FILTER ( ?x0 != ?x1 ) .
M2 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
M2 ns:film.film.written_by ?x0 .
M3 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
M3 ns:film.film.written_by ?x0
}