question: Which production company was founded by a cinematographer and employed a cinematographer 's sibling
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.production_company .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
  ?x0 ns:organization.organization.founders ?x2 .
  ?x1 ns:people.person.sibling_s/ns:people.sibling_relationship.sibling|ns:fictional_universe.fictional_character.siblings/ns:fictional_universe.sibling_relationship_of_fictional_characters.siblings ?x3 .
  ?x2 a ns:film.cinematographer .
  ?x3 a ns:film.cinematographer .
  FILTER ( ?x1 != ?x3 )
  }