With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The brown bear is an organism.
text_B: Ursus is a genus in the family Ursidae -LRB- bears -RRB- that includes the widely distributed brown bears , the polar bear , and black bears .. polar bear. polar bear. genus. genus. Ursidae. Ursidae. bear. bear. The name is derived from the Latin ursus , meaning bear .. bear. bear. Latin. Latin
related.