With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Worldwide, over 100 million records have been sold by R. Kelly.
text_B: Elisabeth Magdalena of Pomerania -LRB- 14 June 1580 -- 23 February 1649 -RRB- , was a Duchess consort of Courland .. Duchess consort of Courland. Duchess of Courland. She married the Duke of Courland , Friedrich Kettler , on 14 March 1600 .. Friedrich Kettler. Friedrich Kettler. She was the daughter of Ernst Ludwig , Duke of Pomerania and Sophia Hedwig of Brunswick-Luneburg .. Category  :1580 births. Category  :1649 deaths. Category  :17 th-century Latvian people. Category  : Duchesses of Courland. Category  : Burials in the Ducal Crypt of the Jelgava Palace. Category  : House of Pomerania
not_related.