Premise: Nigeria . , Nigeria is the world 's 20th largest economy , worth more than $ 500 billion and $ 1 trillion in terms of nominal GDP and purchasing power parity respectively . It overtook South Africa to become Africa 's largest economy in 2014 . It is also listed among the `` Next Eleven '' economies set to become among the biggest in the world .
Hypothesis: Nigeria is Africa's largest economy.
Label: ENTAILMENT