This is some data: Bacon sandwich DISH_VARIATION BLT; BLT DISH_VARIATION Club sandwich; BLT INGREDIENT Tomato; Bacon sandwich COUNTRY United Kingdom; United Kingdom LEADER_NAME Elizabeth II.

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Elizabeth II is the leader of the UK where bacon sandwiches are a popular dish. A variation of the bacon sandwich is a BLT (which contains tomato), which itself is a variation of a club sandwich.