question: Were M2 and M4 founded by a film director , founded by M3 , and founded by M0 's sequel 's editor
query: SELECT count(*) WHERE {
  ?x0 ns:film.editor.film ?x1 .
  ?x1 ns:film.film.prequel M0 .
  ?x2 a ns:film.director .
  M2 ns:organization.organization.founders ?x0 .
  M2 ns:organization.organization.founders ?x2 .
  M2 ns:organization.organization.founders M3 .
  M4 ns:organization.organization.founders ?x0 .
  M4 ns:organization.organization.founders ?x2 .
  M4 ns:organization.organization.founders M3
  }