With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Marshall McLuhan was a controversial entity.
text_B: Mokokchung -LRB- Pron  :  /  ˌməʊkɒkˈtʃʌŋ  /  -RRB- is a district of Nagaland state in India .. Nagaland. Nagaland. India. India. Mokokchung. Mokokchung. district. districts of Nagaland. The town of Mokokchung is its headquarters .. Mokokchung. Mokokchung. It is the home of the Ao Naga tribe .. Ao Naga. Ao Naga. It covers an area of 1,615 km ² .. It is bounded by the state of Assam to its north , Wokha district to its west , Tuensang and Longleng district to its east , and Zunheboto district to its south .. district. districts of Nagaland. Assam. Assam. Wokha district. Wokha district. Tuensang. Tuensang district. Longleng district. Longleng district. Zunheboto district. Zunheboto district
not_related.