With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Paul Simon has a middle name.
text_B: Erwin Lehn -LRB- 8 June 1919 , Grunstadt -- 20 March 2010 -RRB- was a German jazz composer , bandleader and musician .. Grunstadt. Grunstadt. On 1 April 1951 he established the Sudfunk dance orchestra of the South German Radio in Stuttgart , which he directed until 1992 .. South German Radio. Suddeutscher Rundfunk. Sudfunk. Sudfunk. With the start of a new public broadcasting corporation , the Sudwestrundfunk , the name of the `` Sudfunk Tanzorchester '' was changed to `` SWR Big Band '' .. Sudwestrundfunk. Sudwestrundfunk. Sudfunk. Sudfunk
not_related.