Was M2 directed by a film producer 's sibling and written by a person
SELECT count(*) WHERE {
?x0 a ns:people.person .
?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.producer .
FILTER ( ?x1 != ?x2 ) .
M2 ns:film.film.directed_by ?x1 .
M2 ns:film.film.written_by ?x0
}