QUESTION: Generate a question with a factual answer?

ANS: What defines "blackness"?

QUESTION: Generate a question with a factual answer?

ANS: What are electrical fields projected on to?

QUESTION: Generate a question with a factual answer?

ANS: What features 33 strokes?

QUESTION: Generate a question with a factual answer?

ANS:
Besides stamps, what did the Soviet Union also create in Avicenna's honor?