question: Was a screenwriter employed by a company and employed by a film distributor M2
query: SELECT count(*) WHERE {
  ?x0 a ns:business.employer .
  ?x1 a ns:film.film_distributor .
  M2 a ns:film.writer .
  M2 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
  M2 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1
  }