With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The right to sell televisions in the Americas was acquired by Hisense.
text_B: SuperMontage , also abbreviated simply as SM , is an integrated trading system used in an American stock exchange NASDAQ that was implemented in 2002 .. NASDAQ. NASDAQ. It features fully integrated public limit order book and market maker quotations , the ability to enter multiple quotes , anonymous ordering , five-level deep buy and sell interest and time-stamps on individual orders .. order book. Order book ( trading ). market maker. market maker
not_related.