With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The AK-47 has not been used by armed forces.
text_B: Tielen is a railway station in Tielen , Antwerp , Belgium .. Tielen. Tielen. Antwerp. Antwerp ( province ). Belgium. Belgium. railway station. railway station. The station opened in 1855 and is located on Line 29 .. Belgian railway line 29. Line 29. Belgian railway line 29
not_related.