Historical clue formulations

• Lay eggs, as fish — 2024-05-23
• Fish eggs — 2024-02-13
• Induce — 2023-02-11
• What salmon swim upstream to do — 2020-06-15
• Offspring — 2013-11-28
• Give rise to — 2013-06-06
• Engender — 2011-08-17
• Reproduce like salmon — 2009-09-22
• Produce — 2008-06-21
• Reproduce like salmon — 2003-12-03
• Offspring — 2000-07-04
• Give rise to — 2000-05-11
• Give birth to — 1999-08-16
• Beget — 1999-02-28
• Give rise to — 1998-12-27
• Produce — 1994-12-02
• Give rise to — 1994-09-22