With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: John Lennon was a member of a rock band.
text_B: Demini River is a river in the Amazon rainforest of the state of Amazonas , Brazil .. Brazil. Brazil. river. river. Amazon rainforest. Amazon rainforest. Amazonas. Amazonas ( Brazilian state ). It is a tributary of the Rio Negro .. Rio Negro. Rio Negro ( Amazon )
not_related.