With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Omar Sharif spoke Arabic fluently.
text_B: Rajani was a popular TV series aired on Doordarshan in the mid-1980s directed by Basu Chatterjee .. Basu Chatterjee. Basu Chatterjee. Doordarshan. Doordarshan. It had Priya Tendulkar in lead role .. Priya Tendulkar. Priya Tendulkar. It became immensely popular for creating awareness among lax government offices and officials .. It was written by Karan Razdan who also acted in the series .. Karan Razdan. Karan Razdan
not_related.