With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Iggy Azalea decided to keep Ignorant Art private forever.
text_B: South Africa competed at the 2016 Summer Olympics in Rio de Janeiro , from 5 to 21 August 2016 .. Rio de Janeiro. Rio de Janeiro. South Africa. South Africa. 2016 Summer Olympics. 2016 Summer Olympics. This was the nation 's seventh consecutive appearance at the Games in the post-apartheid era , and nineteenth overall in Summer Olympic history .. The South African Sports Confederation and Olympic Committee -LRB- SASCOC -RRB- sent the nation 's largest ever delegation to the Olympics , with a total of 138 athletes , 93 men and 45 women , competing across 15 sports .. South African Sports Confederation and Olympic Committee. South African Sports Confederation and Olympic Committee. South Africa left Rio de Janeiro with a total of 10 medals -LRB- 2 gold , 6 silver , and 2 bronze -RRB- , marking the nation 's most successful Olympics since its readmission in 1992 .. Rio de Janeiro. Rio de Janeiro. South Africa. South Africa. 1992 Summer Olympics. Moreover , it attained the potential medal target set by SASCOC for the Games .. Four of these medals were awarded to the track and field athletes , including two golds won respectively by runners Caster Semenya and Wayde van Niekerk , who broke the 16-year-old world record in the men 's 400 metres .. Wayde van Niekerk. Wayde van Niekerk. Caster Semenya. Caster Semenya. South Africa also proved particularly successful in team sports , as the rugby sevens squad , popularly known by locals as Blitzboks , scored a historic bronze over Japan in the men 's tournament .. South Africa. South Africa. Among the medalists were Luvo Manyonga , who overcame drug addiction to achieve a runner-up finish in the men 's long jump , cancer survivor Lawrence Brittain , who picked up a silver alongside his veteran partner Shaun Keeling in the men 's rowing pair , and Henri Schoeman , who surprised the field by securing South Africa 's first ever triathlon medal with a bronze in the men 's race .. South Africa. South Africa. Luvo Manyonga. Luvo Manyonga. Lawrence Brittain. Lawrence Brittain. Shaun Keeling. Shaun Keeling. Henri Schoeman. Henri Schoeman. Swimmers Cameron van der Burgh and Chad le Clos contributed three of the country 's silver medals in the pool , with le Clos emerging as South Africa 's most decorated Olympian of all-time at four medals -LRB- one gold and three silver -RRB- over two Games .. South Africa. South Africa. Cameron van der Burgh. Cameron van der Burgh. Chad le Clos. Chad le Clos. Meanwhile , Sunette Viljoen rebounded from a disappointed 2012 feat to ascend the Olympic podium at her fourth Games , earning a silver in the women 's javelin throw .. Sunette Viljoen. Sunette Viljoen
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