With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Kiiara's music is free of bass.
text_B: Wien 's law or Wien law may refer to  :. Wien approximation , an equation used to describe the short-wavelength -LRB- high frequency -RRB- spectrum of thermal radiation. Wien approximation. Wien approximation. Wien 's displacement law , an equation that describes the relationship between the temperature of an object and the peak wavelength or frequency of the emitted light
not_related.