QUESTION: Generate a question with a factual answer?

ANS: What caused Victoria's rheumatism?

QUESTION: Generate a question with a factual answer?

ANS: Who was Tito formally an ally of after WWII?

QUESTION: Generate a question with a factual answer?

ANS: When was Russia renamed the Russian Federation?

QUESTION: Generate a question with a factual answer?

ANS:
In what year was the tantalum light filament invented?