Historical clue formulations

• Compare — 2017-11-29
• Compare — 2017-11-21
• Make an analogy with, with "to" — 2016-07-04
• Compare — 2015-08-30
• Compare — 2013-01-21
• Compare — 2008-04-18
• Equate, in a way — 2004-06-25
• Compare — 2003-12-09