With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Black Mirror has been reviewed.
text_B: Cetywayo and His White Neighbours , or Remarks on Recent Events in Zululand , Natal and the Transvaal is a 1882 non-fiction book by H. Rider Haggard , his first full-length published work .. H. Rider Haggard. H. Rider Haggard. It was based on his time working in South Africa .. The `` Cetywayo '' of the title is the Zulu king Cetshwayo kaMpande .. Cetshwayo kaMpande. Cetshwayo kaMpande
not_related.