question: Were M1 , M2 , and M3 founded by a film director and founded by a film director
query: SELECT count(*) WHERE {
  ?x0 a ns:film.director .
  ?x1 a ns:film.director .
  M1 ns:organization.organization.founders ?x0 .
  M1 ns:organization.organization.founders ?x1 .
  M2 ns:organization.organization.founders ?x0 .
  M2 ns:organization.organization.founders ?x1 .
  M3 ns:organization.organization.founders ?x0 .
  M3 ns:organization.organization.founders ?x1
  }