Fill in the response. 
 + What was the line up changes South Korean group Kara faced?.
 + South Korean group Kara Members Nicole Jung and Kang Ji-young officially departed from the group in 2014, while Kim Sung-hee left in 2008..
 + Why did Kang Ji-young leave the group Kara?.
 + Kang Ji-young left South Korean group Kara because her contract was expiring and to puruse her other dreams..
 + Who was Kang Ji-young eplaced with?.
 + South Korean group Kara member Kang Ji-young was replaced with Youngji..
 + What were the names of the two new members of Kara?.
 + The two new members of South Korean group Kara are Younji and Hara..
 + What is Rock U by Kara?.
 + Rock U is the first mini-album by South Korean girl group Kara..
 + How did the album Rock U by Kara do on the charts?.
 + South Korean group Kara's album Rock U was in the Japan Oricon Weekly albums at 106..
 + Are there any other interesting aspects about the South Korean group Kara album Rock U besides being in the Japan Oricon Weekly albums at 106?.
 + South Korean group Kara's album Rock U was also the first album to feature the two new members of the group; Kang Jiyoung and Goo Hara..
 + Did the South Korean group Kara tour at all?.
 + South Korean group Kara's first concert tour was Karasia in 2012, as well as their second, third and fourth tour also titled Karasia in 2013, 2014 and 2015..
 + What career break though did Kara have?.
 + 
South Korean group Kara Member Park Gyuri attributed their popularity increase to their pretty but natural appeal.