With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Dinosaurs are related to reptiles.
text_B: Eriogonum microthecum is a species of wild buckwheat known by the common name slender buckwheat .. Eriogonum. Eriogonum. wild buckwheat. Eriogonum. It is native to the western United States where it is found in a variety of habitats , particularly in dry areas such as deserts .
not_related.