question: Which British founder of a production company was M1 's parent
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:organization.organization_founder.organizations_founded ?x1 .
  ?x0 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child M1 .
  ?x0 ns:people.person.nationality ns:m.07ssc .
  ?x1 a ns:film.production_company
  }