Which production company was founded by M1 's sibling and employed a art director
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.production_company .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x0 ns:organization.organization.founders ?x2 .
?x1 a ns:film.film_art_director .
?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 M1 .
FILTER ( ?x2 != M1 )
}