With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Chainsmokers were nominated for a Grammy Award but lost.
text_B: Ethanol , the type of alcohol found in alcoholic beverages , can exacerbate sleep disturbances .. Ethanol. Ethanol. alcohol. alcohol. During abstinence , sleep disruption is one of the greatest predictors of relapse .. abstinence. abstinence. relapse. relapse
not_related.