question: Did M2 employ M3 , employ M0 's spouse , and employ M1 's producer
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 M0 .
  ?x1 ns:film.producer.film|ns:film.production_company.films M1 .
  FILTER ( ?x0 != M0 ) .
  M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
  M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
  M2 ns:business.employer.employees/ns:business.employment_tenure.person M3
  }