With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Singing Detective aired in the 1980's.
text_B: Pustak Mahal Publishers is a family-owned company incorporated in 1974 .. , Ram Avatar Gupta is the Chairman of the company .. With headquarters at New Delhi , it has branches at Bangalore , Mumbai , Hyderabad and Patna .. It publishes mainly low cost paperback editions on subjects like English learning courses , dictionaries , astrology , palmistry , numerology , beauty care , self-improvement books , books for children , cooking guides , Hindu Mythology , text books etc. and participates in Books fairs arranged in cities like Allahabad , Visakhapatnam , Beijing etc. .. Allahabad. Allahabad. Visakhapatnam. Visakhapatnam. Pustak Mahal joined other Indian publishers to protest against scanning and uploading of books by Google under the provisions of Google Book Settlement and filed objections with a New York court during 2010 .. Google. Google. Google Book Settlement. Google Book Settlement
not_related.