QUESTION: Generate a question with a factual answer?

ANS: What model did the work of Muslim World astronomers contribute to?

QUESTION: Generate a question with a factual answer?

ANS: What part of the Arsenal crest is sometimes mistaken for chimneys?

QUESTION: Generate a question with a factual answer?

ANS: What population descended from the Vlachs?

QUESTION: Generate a question with a factual answer?

ANS:
For how many years is the Portugal president elected?