With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Akira Toriyama achieved mainstream recognition for Dr. Slump in 2005.
text_B: was the 56th emperor of Japan , according to the traditional order of succession .. emperor. emperor. Japan. Japan. order of succession. List of Emperors of Japan. Seiwa 's reign spanned the years from 858 through 876 .
not_related.