Historical clue formulations

• French leader after Hollande — 2019-08-30
• Hollande's successor as president of France — 2018-02-24
• Long vowel indicator — 2015-07-30
• Diacritical mark — 2012-09-27
• Long-vowel mark — 2002-07-10
• Diacritical mark — 1998-07-17
• Diacritical mark — 1995-01-31