Generate a question with a factual answer.
Generated: What do you call the length of time that foam is on top of beer because of carbonation?

Generate a question with a factual answer.
Generated: Where was the first open competition for brass bands held?

Generate a question with a factual answer.
Generated: In what year was an agreement reached to ban mining in Antarctica?

Generate a question with a factual answer.
Generated: What flew by Neptune in 1989?