QUESTION: Generate a question with a factual answer?

ANS: What instruments were used to make music by the Central Americans?

QUESTION: Generate a question with a factual answer?

ANS: Who were the collaborators assisting Japan in Hong King?

QUESTION: Generate a question with a factual answer?

ANS: What were Picasso's 1907 paintings usually characterized by?

QUESTION: Generate a question with a factual answer?

ANS:
What did the scientist who discovered the dye do after discovering it?