With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Tyrion Lannister is a character in one novel.
text_B: The Battle for Czechoslovak Radio was a major part of the Prague uprising during World War II .. Prague uprising. Prague uprising. Prague. Prague. World War II. World War II. Plans for the liberation of the radio station were prepared by Captain Valter in late April 1945 .. Captain Palicka and Captain Valter grouped their forces so as to attack the building .. The fierce battle resulted in a victory of the Czech fighters .
not_related.