question: Was M3 a female person whose Dutch sibling played M1 and M2
query: SELECT count(*) WHERE {
  ?x0 ns:film.actor.film/ns:film.performance.character M1 .
  ?x0 ns:film.actor.film/ns:film.performance.character M2 .
  ?x0 ns:people.person.nationality ns:m.059j2 .
  FILTER ( M3 != ?x0 ) .
  M3 a ns:people.person .
  M3 ns:people.person.gender ns:m.02zsn .
  M3 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 ?x0
  }