With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: A Game of Thrones is a fantasy, fictional novel written by George R. R. Martin.
text_B: Nuestros Pequenos Hermanos -LRB- NPH -RRB- , literally meaning Our little brothers and sisters , is a charitable organization that has provided a home for thousands of orphans and abandoned children since 1954 .. Currently there are NPH homes in nine Latin American countries .
not_related.