question: What parent of M3 's executive producer and producer did M0 , M1 , and M2 marry
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child ?x1 .
  ?x0 ns:people.person.spouse_s/ns:people.marriage.spouse|ns:fictional_universe.fictional_character.married_to/ns:fictional_universe.marriage_of_fictional_characters.spouses M0 .
  ?x0 ns:people.person.spouse_s/ns:people.marriage.spouse|ns:fictional_universe.fictional_character.married_to/ns:fictional_universe.marriage_of_fictional_characters.spouses M1 .
  ?x0 ns:people.person.spouse_s/ns:people.marriage.spouse|ns:fictional_universe.fictional_character.married_to/ns:fictional_universe.marriage_of_fictional_characters.spouses M2 .
  ?x1 ns:film.producer.films_executive_produced M3 .
  ?x1 ns:film.producer.film|ns:film.production_company.films M3 .
  FILTER ( ?x0 != M0 ) .
  FILTER ( ?x0 != M1 ) .
  FILTER ( ?x0 != M2 )
  }