question: Which sibling of a screenwriter was influenced by M0 and was influenced by a star and executive producer of M2
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:influence.influence_node.influenced_by ?x1 .
  ?x0 ns:influence.influence_node.influenced_by M0 .
  ?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 ?x2 .
  ?x1 ns:film.actor.film/ns:film.performance.film M2 .
  ?x1 ns:film.producer.films_executive_produced M2 .
  ?x2 a ns:film.writer .
  FILTER ( ?x0 != ?x2 )
  }