question: Was a French actor whose sibling produced and edited M3 , M4 , M5 , and M6 M1 's writer
query: SELECT count(*) WHERE {
  ?x0 a ns:film.actor .
  ?x0 ns:film.writer.film M1 .
  ?x0 ns:people.person.nationality ns:m.0f8l9c .
  ?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:film.editor.film M3 .
  ?x1 ns:film.editor.film M4 .
  ?x1 ns:film.editor.film M5 .
  ?x1 ns:film.editor.film M6 .
  ?x1 ns:film.producer.film|ns:film.production_company.films M3 .
  ?x1 ns:film.producer.film|ns:film.production_company.films M4 .
  ?x1 ns:film.producer.film|ns:film.production_company.films M5 .
  ?x1 ns:film.producer.film|ns:film.production_company.films M6 .
  FILTER ( ?x0 != ?x1 )
  }