question: Was M2 produced by a person , executive produced by a spouse of a spouse of M0 , and written by M3
query: SELECT count(*) WHERE {
  ?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 ?x1 .
  ?x1 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 .
  ?x2 a ns:people.person .
  FILTER ( ?x0 != ?x1 ) .
  FILTER ( ?x1 != M0 ) .
  M2 ns:film.film.executive_produced_by ?x0 .
  M2 ns:film.film.produced_by|ns:film.film.production_companies ?x2 .
  M2 ns:film.film.written_by M3
  }