question: Was M1 executive produced by M2 , executive produced by M3 , executive produced by M0 's executive producer , and executive produced by M4
query: SELECT count(*) WHERE {
  ?x0 ns:film.producer.films_executive_produced M0 .
  M1 ns:film.film.executive_produced_by ?x0 .
  M1 ns:film.film.executive_produced_by M2 .
  M1 ns:film.film.executive_produced_by M3 .
  M1 ns:film.film.executive_produced_by M4
  }