With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: John Lennon was a Buddhist.
text_B: German submarine U-138 was a Type IID U-boat of Nazi Germany 's Kriegsmarine in World War II .. Type IID U-boat. German Type II submarine#Type IID. Nazi Germany. Nazi Germany. Kriegsmarine. Kriegsmarine. Her keel was laid down on 16 November 1939 by Deutsche Werke in Kiel as yard number 267 .. laid down. Keel laying. Deutsche Werke. Deutsche Werke. Kiel. Kiel. She was launched on 18 May 1940 and commissioned on 27 June 1940 with Oberleutnant zur See Wolfgang Luth in command .. launched. ship naming and launching. commissioned. ship commissioning. Oberleutnant zur See. Oberleutnant zur See. Wolfgang Luth. Wolfgang Luth. U-138 conducted five patrols , sinking six ships totalling and damaged one vessel of .. She was scuttled on 18 June 1941 after being damaged by British warships west of Cadiz in Spain .. Cadiz. Cadiz. There were no casualties from her crew of 28 .
not_related.