question: What film producer was a person that directed M3 , M4 , and M5 and executive produced M2
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.producer .
  ?x0 a ns:people.person .
  ?x0 ns:film.director.film M3 .
  ?x0 ns:film.director.film M4 .
  ?x0 ns:film.director.film M5 .
  ?x0 ns:film.producer.films_executive_produced M2
  }