Nice fork of my notebook. For my information, are you interested in P17 (country) or P27 (country of citizenship, mostly for humans)? Just to let you know, you can also check this notebook https://observablehq.com/@pac02/look-at-your-list-of-created-articles-through-Wikidata which allows to choose P31, P17, P21, P27 or P106. It could easily be extended to other properties if relevant.