question: Were M3 and M4 produced by a producer and director of M1 and M2 and executive produced by a company 's employee
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
  ?x1 a ns:business.employer .
  ?x2 ns:film.director.film M1 .
  ?x2 ns:film.director.film M2 .
  ?x2 ns:film.producer.film|ns:film.production_company.films M1 .
  ?x2 ns:film.producer.film|ns:film.production_company.films M2 .
  M3 ns:film.film.executive_produced_by ?x0 .
  M3 ns:film.film.produced_by|ns:film.film.production_companies ?x2 .
  M4 ns:film.film.executive_produced_by ?x0 .
  M4 ns:film.film.produced_by|ns:film.film.production_companies ?x2
  }