question: Was a Spanish screenwriter M2 's executive producer 's sibling 's sibling
query: SELECT count(*) WHERE {
  ?x0 a ns:film.writer .
  ?x0 ns:people.person.nationality ns:m.06mkj .
  ?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 ?x1 .
  ?x1 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 .
  ?x2 ns:film.producer.films_executive_produced M2 .
  FILTER ( ?x0 != ?x1 ) .
  FILTER ( ?x1 != ?x2 )
  }