question: What was executive produced by M1 's cinematographer 's sibling and executive produced by a film director
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film.executive_produced_by ?x1 .
  ?x0 ns:film.film.executive_produced_by ?x2 .
  ?x1 a ns:film.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 ?x3 .
  ?x3 ns:film.cinematographer.film M1 .
  FILTER ( ?x2 != ?x3 )
  }