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- News Navigator: Through what procedures can the Constitution be changed?
- News Navigator: Why are universities introducing untraditional entrance exams?
- News Navigator: Why has a special law against new-type influenza been passed?
- News Navigator: Why did Japan mark restoration of its sovereignty on April 28?
- News Navigator: What is the thyroid gland?
- News navigator: What was former prime minister Kishi's stance on nuclear weapons?