Title: Tibet.
Question: When did Jesuit Father Ippolito Desideri spend time in Tibet?

Title: Ottoman Empire.
Question: What was the name of the son of Osman that captured an Anatolian city?

Title: Korean War.
Question: What did Kim Il-Sung do after the peace overture was rejected?

Title: Frédéric Chopin.
Question:
Where was Chopin's first concert in Paris held?