With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: K-pop Star 2 involves Yang Hyn-suk.
text_B: The second season of the South Korean reality television competition show K-pop Star premiered on SBS on November 18 , 2012 , airing Sunday evenings at 4 :55 pm KST as part of the Good Sunday lineup .. SBS. Seoul Broadcasting System. reality television. reality television. K-pop Star. K-pop Star. KST. Korea Standard Time. Good Sunday. Good Sunday. Yoon Do-hyun returned as host and narrator , and Boom returned as live host .. Yoon Do-hyun. Yoon Do-hyun. Boom. Boom ( entertainer ). Yang Hyun-suk , Park Jin-young , and BoA returned as judges .. BoA. BoA. Park Jin-young. Park Jin-young. Yang Hyun-suk. Yang Hyun-Seok. The season ended on April 6 , 2013 , with Akdong Musician crowned as winner and chose to sign with YG Entertainment .. Akdong Musician. Akdong Musician. YG Entertainment. YG Entertainment. Contestants from the Top 10 of Season 2 returned for a special Dream Stage - Best of the Best episode on April 14 , 2013 , competing with contestants of Season 1 for the title of Overall Champion .
related.