With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Katherine Heigl played a character created by Aaron Sorkin.
text_B: ZG , Zg , or zg may refer to  :. Arts and entertainment  :. Z-G , a collectible action figure game. Z-G. Z-G. ZOEgirl , a pop rock band. ZOEgirl. ZOEgirl. Places  :. Aspen and Pitkin County , Colorado -LRB- former vehicle plate code ZG -RRB-. Zagreb , the capital and the largest city of Croatia. Zagreb. Zagreb. Zigong , in Sichuan province of China. Zigong. Zigong. Canton of Zug , one of the 26 cantons of Switzerland. Canton of Zug. Canton of Zug. Other uses  :. Viva Macau -LRB- IATA airline code ZG -RRB-. Viva Macau. Viva Macau. Zeptogram -LRB- written zg , with lower case `` z '' -RRB- , an SI unit of mass -LRB- equal to 10 − 21 g -RRB-. Zeptogram. Zeptogram. Zettagram -LRB- written Zg , with capital `` Z '' -RRB- , an SI unit of mass -LRB- equal to 1021 g -RRB-. Zettagram. Zettagram
not_related.