question: Did a person that directed M3 and M4 and executive produced M1 direct and produce M2
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:film.director.film M2 .
  ?x0 ns:film.director.film M3 .
  ?x0 ns:film.director.film M4 .
  ?x0 ns:film.producer.films_executive_produced M1 .
  ?x0 ns:film.producer.film|ns:film.production_company.films M2
  }