With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Afghanistan is a TV show on CBS.
text_B: Carboxypeptidase G may refer to  :. Glutamate carboxypeptidase , an enzyme. Glutamate carboxypeptidase. Glutamate carboxypeptidase. Gamma-glutamyl hydrolase , an enzyme. Gamma-glutamyl hydrolase. Gamma-glutamyl hydrolase
not_related.