With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Britney Spears has yet to create any studio albums.
text_B: Rudolf Knijnenburg Cordero -LRB- born May 18 , 1982 in Santa Cruz de la Sierra -RRB- is a Bolivian sport shooter .. Santa Cruz de la Sierra. Santa Cruz de la Sierra. He represented his nation Bolivia in pistol shooting at the 2004 Summer Olympics and in four editions of the Pan American Games -LRB- 2003 , 2007 , 2011 , and 2015 -RRB- .. Bolivia. Bolivia. 2004 Summer Olympics. 2004 Summer Olympics. Pan American Games. Pan American Games. Knijnenburg qualified as a lone shooter for the Bolivian squad in the men 's 10 m air pistol at the 2004 Summer Olympics in Athens after having accepted an invitational berth for his country from the International Shooting Sport Federation with a minimum score of 570 .. Shooting. Shooting sport. 2004 Summer Olympics. 2004 Summer Olympics. Athens. Athens. International Shooting Sport Federation. International Shooting Sport Federation. air pistol. Shooting at the 2011 Pan American Games – Men's 10 metre air pistol. He rounded off the field of forty-seven shooters with the lowest overall score in the prelims , firing at 548 points .. Despite missing out his 2008 and 2012 Olympic bid , Knijnenburg 's most remarkable feat came at the 2011 Pan American Games in Guadalajara , where he finished seventh in the air pistol final with a total of 669.7 points .. Pan American Games. Pan American Games. 2011 Pan American Games. 2011 Pan American Games. Guadalajara. Guadalajara. air pistol. Shooting at the 2011 Pan American Games – Men's 10 metre air pistol
not_related.