question: Did a Canadian editor of M3 , M4 , M5 , and M6 found M0 and M1
query: SELECT count(*) WHERE {
  ?x0 ns:film.editor.film M3 .
  ?x0 ns:film.editor.film M4 .
  ?x0 ns:film.editor.film M5 .
  ?x0 ns:film.editor.film M6 .
  ?x0 ns:organization.organization_founder.organizations_founded M0 .
  ?x0 ns:organization.organization_founder.organizations_founded M1 .
  ?x0 ns:people.person.nationality ns:m.0d060g
  }