Generate a question with a factual answer.
Generated: Why were plant populations affected after wolves were eliminated from Yellowstone?

Generate a question with a factual answer.
Generated: Some people say DST can help sufferers of depression because it encourages them to do what?

Generate a question with a factual answer.
Generated: When do the pictograms suggest Sumerians had domesticated livestock?

Generate a question with a factual answer.
Generated: What is special about Wutaishan Sports Center, from a historical perspective?