With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Barack Obama signed the landmark Obamacare bill
text_B: Bambu is a brand of rolling paper sold by Bambu Sales Inc. in New York , New York .. rolling paper. rolling paper. The company writes that Bambu began in Spain in 1764 , originally for the Bible .. The paper it sells is still manufactured in that country , by Miguel y Costas & Miguel , S.A. .. It offers a number of paper sizes -- regular , big , half extra , and double wide -- and a line of pure hemp papers which are made in Argentina .
not_related.