Complex sentence: It was announced on August 31,2012 that Girls' Generation will embark on their second nationwide Japan tour starting 2013, with a total of 14 stops in Nagoya, Osaka, Fukuoka, Saitama, Hiroshima & Kobe.
Split into simpler sentences: It was announced on August 31,2012 that Girls' Generation will embark on their second nationwide Japan tour starting 2013, with a total of 14 stops. The tour covered Nagoya, Osaka, Fukuoka, Saitama, Hiroshima & Kobe.