With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Jeffrey Dahmer was a cannibal of seventeen people.
text_B: Johanna Magdalene of Saxe-Weissenfels -LRB- 17 March 1708 -- 25 January 1760 -RRB- , was a Duchess consort of Courland .. Duchess consort of Courland. Duchess of Courland. She married the Duke of Courland , Ferdinand Kettler , on 20 September 1730 .. Ferdinand Kettler. Ferdinand Kettler. She was the daughter of Johann Georg , Duke of Saxe-Weissenfels and Fredericka Elisabeth of Saxe-Eisenach .. Fredericka Elisabeth of Saxe-Eisenach. Fredericka Elisabeth of Saxe-Eisenach. The marriage was childless .. Category  :1708 births. Category  :1760 deaths. Category  :18 th-century Latvian people. Category  : Duchesses of Courland
not_related.