question: What was distributed by a person and produced by M1 's sibling
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film.distributors/ns:film.film_film_distributor_relationship.distributor ?x1 .
  ?x0 ns:film.film.produced_by|ns:film.film.production_companies ?x2 .
  ?x1 a ns:people.person .
  ?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 )
  }