Title: Frederic Chopin.
Question: In what year was the Saxon Palace taken by the Russian governor for use regarding the military?

Title: Oklahoma.
Question: How does Oklahoma rank among US states for producing natural gas?

Title: Race (human categorization).
Question: What is a social concept, not a scientific one?

Title: Southeast Asia.
Question:
Which Chinese admiral was related to the development of Islam in Indonesia & Malaya?