英国2011年国勢調査質問票ＤＬページ。続柄項目はHusband or wife/Same-sex civil partner/Partner/Son or daughter/Step-child/Brother or sister/Step-brother or step-sister/Mother or father/Step-mother or../Grandchild/Grandparent/Relation - other/Unrelated (including foster child)
https://www.ons.gov.uk/census/2011-census/2011-census-questionnaire-content/index.html
