Given an open-ended topic (movie name, a persons name, an event, sports, etc) generate a simple trivia-type question.
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Question: boat lift

Answer: Opened in 2002, the world's only rotating boat lift is on the Forth & Clyde Canal; what is its name?


Question: blah blah blah

Answer: Blah Blah Blah was a 2010 hit for which female singer?


Question: battle of thermopylae

Answer:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
At which narrow pass did Leonidas and 300 Spartans fight to the death, in order to slow down the Persian army?


