:Wikidata is in an advanced stage and contains useful data for this project. Using the Autolist2 tool we can retrieve the number of articles by entity. For example, searching for the "instance of" "Castle", it shows that there are 11,000+ castles in Wikidata. I'm not sure if add this info to a new column "Wikidata", next to the "Progress" columns. I still have to figure out how to get only English Wikipedia results. Thoughts?