Historical clue formulations

• Low-lying wetland — 2020-04-16
• Marshy valley — 2015-12-22
• Geographic depression — 2015-11-03
• Wet depression — 2014-10-05
• Marshy lowland — 2014-05-25
• Marshy tract — 2010-07-11
• Low-lying land — 2010-06-27
• Low-lying wetland — 2009-02-11
• Low-lying wetland — 2009-01-14
• Low marshland — 2008-07-30
• Low spot of land — 2000-08-13
• Low place — 2000-07-20
• Wet lowland — 2000-05-11
• Low-lying area — 2000-02-16
• Low area of land — 1999-06-29
• 1984 Kentucky Derby winner — 1998-12-10