Generate a question with a factual answer.
Generated: The state ranked second with over 150,000 metric tons of what metal?

Generate a question with a factual answer.
Generated: What did Hume say can't be rationally justified?

Generate a question with a factual answer.
Generated: The period of time from 1200 to 1000 BCE is known as what?

Generate a question with a factual answer.
Generated: How many US veterans of the Persian Gulf War have been classed as permanently disabled?