Scoring: South Korea

• Date of joining: 1991-09-17
• Expected count from Wikipedia (Roh Tae-woo onwards): 8
• Number in Wikidata: 7
• PositionHolderHistory warnings: 0
• Score: 70/80 = 88%

Here the one missing entry is for Hwang Kyo-ahn, who Wikidata knows explicitly as the “Acting President of South Korea”. However, the item for the country doesn’t know that this office was the head of government at this point, so this entry won’t be found by any query that doesn’t explicitly know to include this extra item. (Though I suspect we’d be better standardising on the “position held” for the person being for the President, with a “nature of statement: acting” qualifier.)