Were M2 and M4 written by M3 and written by M0 's Italian sibling 's sibling '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: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 ns:people.person.nationality ns:m.03rjj .
?x2 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 M0 .
FILTER ( ?x0 != ?x1 ) .
FILTER ( ?x1 != ?x2 ) .
FILTER ( ?x2 != M0 ) .
M2 ns:film.film.written_by ?x0 .
M2 ns:film.film.written_by M3 .
M4 ns:film.film.written_by ?x0 .
M4 ns:film.film.written_by M3
}