Which sibling of M0 did a production company employ
SELECT DISTINCT ?x0 WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?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 M0 .
?x1 a ns:film.production_company .
FILTER ( ?x0 != M0 )
}