Historical clue formulations

• City of 750,000 SW of Warsaw — 2013-01-05
• Poland's second-largest city — 2008-08-28
• Polish birthplace of Arthur Rubinstein — 2002-01-10
• Arthur Rubinstein's birthplace — 1999-02-27
• City WSW of Warsaw — 1998-03-19
• Polish industrial city — 1995-11-14
• Poland's second-largest city — 1995-04-08