With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Hugo Weaving refused to voice Noah.
text_B: The Ngaoundere Plateau is a highland area in the Adamawa Region of Cameroon .. Adamawa Region. Adamawa Region. Cameroon. Cameroon. It contains Tchabal Nganha , a large volcano , and many other recent volcanic structures .. Tchabal Nganha. Tchabal Nganha
not_related.