question: Were M3 , M5 , and M6 founded by M4 and founded by a actor that edited M1 and M2
query: SELECT count(*) WHERE {
  ?x0 a ns:film.actor .
  ?x0 ns:film.editor.film M1 .
  ?x0 ns:film.editor.film M2 .
  M3 ns:organization.organization.founders ?x0 .
  M3 ns:organization.organization.founders M4 .
  M5 ns:organization.organization.founders ?x0 .
  M5 ns:organization.organization.founders M4 .
  M6 ns:organization.organization.founders ?x0 .
  M6 ns:organization.organization.founders M4
  }