With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Syd Barrett didn't contribute to The Piper at the Gates of Dawn.
text_B: Aesculus chinensis , the Chinese horse chestnut -LRB- Chinese  : 七叶树 qi ye shu -RRB- , is a tree species in the genus Aesculus found in eastern Asia .. Aesculus. Aesculus. The seed contains triterpenoid saponins and flavonoids , such as aescuflavoside and aescuflavoside A , which are glycosides of quercetin .. aescuflavoside. aescuflavoside. aescuflavoside A. aescuflavoside A
not_related.