Title: Frederic Chopin.
Question: Who did Chopin know that became rich in Paris?

Title: Elevator.
Question: What type of public elevator in Yalta, Ukraine, transport passengers from a hill above the Black Sea to a tunnel down on the beach?

Title: Qing dynasty.
Question: When did Tibet become part of Qing China?

Title: Ottoman Empire.
Question:
Who was the son of Murad II?