With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Poland is a republic.
text_B: Krater is a role-playing video game for Microsoft Windows .. Microsoft Windows. Microsoft Windows. role-playing video game. role-playing video game. Fatshark developed the game following the studio 's moderate success after developing Lead and Gold  : Gangs of the Wild West and other titles .. Fatshark. Fatshark. Krater was released in 2012 via the Steam digital distribution platform .. Steam. Steam ( software )
not_related.