Historical clue formulations

• Mounted — 2022-04-16
• Had a friendly relationship (with) — 2020-10-18
• Boarded — 2015-05-31
• Mounted — 2011-07-31
• Mounted, as a horse — 2008-03-10
• Were friendly — 2007-03-23
• Boarded — 2003-11-11
• Boarded — 2003-06-10
• Boarded — 1998-08-22
• Boarded — 1998-01-23
• Entrained — 1995-09-29
• Boarded — 1994-10-08