What is the second longest river in the world?
 Nile River
Yangtze River
Yangtze River
Yangtze River
Yangtze River
Nile River
Yangtze
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Danube River
Amazon River
Nile River
Mekong River
Volga River
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Yangtze River
Niger River
Amazon River
Yangtze
Nile River
Yellow River
Danube River
Danube
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Indus River
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Parana River
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