With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Janet Jackson was signed to the American record label A&M Records.
text_B: Santa Rosa River is a river of Acre state in western Brazil , a tributary of the Purus River .. Purus River. Purus River. Brazil. Brazil. Acre. Acre ( state ). The river defines the boundary between Peru and Brazil in the centre of the state of Acre , then runs for a short distance along the boundary of the 231555 ha Santa Rosa do Purus National Forest , a sustainable use conservation unit created in 2001 , until it joins the Purus River opposite the community of Santa Rosa do Purus .. Purus River. Purus River. Santa Rosa do Purus. Santa Rosa do Purus. Peru. Peru. Brazil. Brazil. Acre. Acre ( state ). Santa Rosa do Purus National Forest. Santa Rosa do Purus National Forest
not_related.