With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: One of the world's largest baseball stadiums is in Rio de Janeiro.
text_B: 151st Division or 151st Infantry Division may refer to  :. 151st Division -LRB- Imperial Japanese Army -RRB-. Italian 151st Garrison Division. Italian 151st Garrison Division. 151st Infantry Division Perugia
not_related.