Resolves YES if Queen Elizabeth dies before end of day September 10 (London time).

https://www.cnn.com/2022/09/08/uk/queen-health-supervision-gbr-intl/index.html

Queen Elizabeth II's doctors "are concerned" for her health and have recommended that the monarch remain under medical supervision, Buckingham Palace said in a statement on Thursday.

This is a copy of DrP's market but a) not made by DrP, and b) with better specified resolution criteria - since we're talking about the next 2-3 days, timezone and the meaning of "before September 11" could matter (I think it clearly means by end of day September 10)..