question: Were M2 and M4 founded by M3 , founded by a cinematographer , and founded by a film editor
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  ?x1 a ns:film.cinematographer .
  M2 ns:organization.organization.founders ?x0 .
  M2 ns:organization.organization.founders ?x1 .
  M2 ns:organization.organization.founders M3 .
  M4 ns:organization.organization.founders ?x0 .
  M4 ns:organization.organization.founders ?x1 .
  M4 ns:organization.organization.founders M3
  }