With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Pirates of the Caribbean (film series) is a successful franchise.
text_B: Dunnite , also known as Explosive D or systematically as ammonium picrate , is an explosive developed in 1906 by US Army Major Beverly W. Dunn , who later served as the chief inspector of the Bureau of Transportation Explosives .. Ammonium picrate is a salt formed by reacting picric acid and ammonia .. salt. salt ( chemistry ). picric acid. picric acid. ammonia. ammonia. It is chemically related to the more stable explosive trinitrotoluene -LRB- TNT -RRB- .. trinitrotoluene. trinitrotoluene
not_related.