question: Was M2 a American person whose spouse played M0 and played M1
query: SELECT count(*) WHERE {
  ?x0 ns:film.actor.film/ns:film.performance.character M0 .
  ?x0 ns:film.actor.film/ns:film.performance.character M1 .
  FILTER ( M2 != ?x0 ) .
  M2 a ns:people.person .
  M2 ns:people.person.nationality ns:m.09c7w0 .
  M2 ns:people.person.spouse_s/ns:people.marriage.spouse|ns:fictional_universe.fictional_character.married_to/ns:fictional_universe.marriage_of_fictional_characters.spouses ?x0
  }