Were M3 and M4 edited by a cinematographer 's sibling and written by M1 's American producer
SELECT count(*) WHERE {
?x0 ns:film.producer.film|ns:film.production_company.films M1 .
?x0 ns:people.person.nationality ns:m.09c7w0 .
?x1 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 ?x2 .
?x2 a ns:film.cinematographer .
FILTER ( ?x1 != ?x2 ) .
M3 ns:film.film.edited_by ?x1 .
M3 ns:film.film.written_by ?x0 .
M4 ns:film.film.edited_by ?x1 .
M4 ns:film.film.written_by ?x0
}