query: SELECT ?paper ?paperLabel ?parentLabel ?childLabel WHERE {
    ?paper wdt:P31 wd:Q13442814;
          wdt:P50 ?parent;
          wdt:P50 ?child.
    { { ?parent wdt:P22 ?child } UNION { ?parent wdt:P25 ?child } }
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
  }
  