With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Tom Welling played in the superhero drama Smallville, which aired on The WB/CW.
text_B: PIXNET is an online Taiwanese mobile photo sharing , blogging , and social networking service , started in 2003 , that enables its users to store pictures or create blogs and share them either publicly or privately on its website .. Taiwanese. Taiwanese people. mobile. Mobile social network. photo sharing. photo sharing. blogging. blogging. social networking. social networking service. The service is also available as an application , PIXNET is available at the App Store and the Google Play Store .. application. Application software. App Store. App Store ( iOS ). Google Play Store. Google Play. The service has a large user following in the Greater China region .. Greater China. Greater China
not_related.