With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Christie Brinkley was engaged to Billy Joel.
text_B: Karaj Metro Station is a station in Tehran Metro Line 5 .. Karaj Metro Station. Karaj Metro. Karaj. Karaj. Tehran. Tehran. Metro. Tehran Metro. Line 5. Tehran Metro Line 5. It is located in southeastern Karaj near Tehran-Qazvin Freeway .. Karaj. Karaj. Tehran. Tehran. Tehran-Qazvin Freeway. Freeway 2 ( Iran ). It is between Atmosfer Metro Station and Mahdasht Metro Station .. Metro. Tehran Metro. Atmosfer Metro Station. Atmosfer Metro Station. Mahdasht Metro Station. Mahdasht Metro Station. Category  : Tehran Metro stations. Tehran. Tehran. Metro. Tehran Metro
not_related.