Historical clue formulations

• Belgian city that hosted the 1920 Summer Olympics — 2021-07-25
• Belgian diamond center — 2018-04-30
• Belgian seaport — 2014-07-16
• 1920 Summer Olympics site — 2007-07-21
• It's across the Albert Canal from Liège — 2007-02-17
• Port on the Scheldt — 2005-05-06
• City on the Scheldt — 1995-11-25