With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: William Shakespeare is widely regarded as the greatest writer in the modern era.
text_B: PurchasePro was a business-to-business Internet startup company founded in Las Vegas , Nevada in 1997 by Charles E. `` Junior '' Johnson , originally to help hotels and casinos pool their purchase power via an online exchange .. business-to-business. business-to-business. startup company. startup company. exchange. Exchange ( organized market ). The company 's accounting practices and subsequent bankruptcy became a scandal resulting in criminal charges , convictions , and fines for a number of executives at the company and at AOL .. AOL. AOL
not_related.