Historical clue formulations

• Alpine region — 2016-03-12
• Snowy region of Austria — 2011-02-22
• Mountainous area of Austria — 2002-06-03
• Brenner Pass's region — 2001-04-12
• Its capital is Innsbruck — 1998-10-07
• Its capital is Innsbruck — 1998-01-07
• Innsbruck is its capital — 1997-11-22
• Where Innsbruck is — 1997-01-26
• Innsbruck is its capital — 1996-02-03