With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Diego Costa plays for English club Chelsea and has a fan base.
text_B: 1C Company -LRB- Russian  : Фирма `` 1С '' -RRB- is an independent Russian software developers and publishers .. Its headquarters are in Moscow , Russia .. Moscow. Moscow. Russia. Russia. It is best known outside Russia as a video game developer whose presence has come to dominate events like the KRI , and whose products have begun to show up for international platforms like the Xbox .. Russia. Russia. video game developer. video game developer. KRI. Russian Game Developers Conference. video game. video game. On the internal Russian market , 1C is considered a leader in business software as well .. 1C 's comprehensive business software suite 1C  : Предприятие -LRB- 1C  : Predpriyatiye , 1C  : Enterprise -RRB- has held an overwhelming market share for over a decade .. 1C is also a leader in localizing and publishing Russian-language versions of international software .. For instance , more than half of popular Western video games are licensed and published by 1C .. The company has over 700 employees , 10,000 business partners , 4,500 authorized retailers , 1,200 training centers , 200 authorized certification locations and over 280 stores in 100 cities .
not_related.