Generate a question with a factual answer.
Generated: How does the APG system of 1998, with its 2003 and 2009 revisions, treat flowering plants?

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Generated: Who has denied testing Chopin's DNA to determine the actual cause of death?

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Generated: How many Christian churches have been found in the Christian Petra?

Generate a question with a factual answer.
Generated: What is a cost of nocturnal migration?