Historical clue formulations

• Be ___ use — 2017-04-23
• ___ concern — 2011-05-03
• ___ use (worthless) — 2011-03-15
• ___ concern — 2009-08-09
• ___ consequence — 2008-06-05
• ___ consequence — 2008-03-16
• ___ consequence — 2007-11-28
• ___ consequence — 2006-05-04
• "River ___ Return" (Mitchum/Monroe flick) — 2000-04-16
• ___ importance — 1999-06-24
• ___ consequence — 1999-06-09
• ___ consequence (insignificant) — 1997-02-17
• ___importance — 1996-06-30
• _____ concern — 1995-10-01