With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Dogs have been selectively bred over millenia.
text_B: The domestic dog -LRB- Canis lupus familiaris or Canis familiaris -RRB- is a member of genus Canis -LRB- canines -RRB- that forms part of the wolf-like canids , and is the most widely abundant carnivore .. Canis. Canis. wolf-like canids. Evolution of the wolf#Wolf-like canids. carnivore. carnivore. The dog and the extant gray wolf are sister taxa , with modern wolves not closely related to the wolves that were first domesticated .. gray wolf. gray wolf. taxa. taxa. domesticated. domestication. The dog was the first domesticated species and has been selectively bred over millennia for various behaviors , sensory capabilities , and physical attributes .. domesticated. domestication. selectively bred. selective breeding. Their long association with humans has led dogs to be uniquely attuned to human behavior and they are able to thrive on a starch-rich diet that would be inadequate for other canid species .. long association with humans. Human–canine bond. starch. starch. Dogs vary widely in shape , size and colours .. Dogs perform many roles for people , such as hunting , herding , pulling loads , protection , assisting police and military , companionship and , more recently , aiding handicapped individuals .. hunting. hunting dog. herding. herding dog. pulling loads. sled dog. protection. guard dog. assisting police. police dog. military. Dogs in warfare. companionship. pet. aiding handicapped individuals. service dog. This influence on human society has given them the sobriquet `` man 's best friend '' .. sobriquet. sobriquet
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