With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Portugal has a very simple economy.
text_B: Advent  : Christmas EP Volume 2 is an EP by Future of Forestry .. Future of Forestry. Future of Forestry. Extended play. It was released on November 2 , 2010 .. It features 4 traditional holiday classics , one original song , and an instrumental interlude .
not_related.