With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Afghanistan is the source of the Hotak dynasty.
text_B: Jean Marcel Cosmat -LRB- July 3 , 1910 -- March 29 , 2010 -RRB- was a French rower who competed in the 1936 Summer Olympics .. French. France. rower. Rowing ( sport ). 1936 Summer Olympics. 1936 Summer Olympics. In 1936 he won the bronze medal as crew member of the French boat in the coxed fours competition .. coxed fours. Rowing at the 1936 Summer Olympics - Men's coxed fours. French. France
not_related.