question: What was written by M1 's British spouse
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film.written_by ?x1 .
  ?x1 ns:people.person.nationality ns:m.07ssc .
  ?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 M1 .
  FILTER ( ?x1 != M1 )
  }