With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: A Song of Ice and Fire is by Angela Merkel.
text_B: Bogs & Voigt was a piano manufacturer in Berlin , Germany .. piano. piano. Berlin. Berlin. The owners Paul Richard Bogs and Adolf Ernst Voigt were awarded an imperial and royal warrant of appointment to the court of Austria-Hungary .. royal warrant of appointment. royal warrant of appointment. Austria-Hungary. Austria-Hungary
not_related.