A potential member of more stature would be Angola , Africa 's second-largest oil producer behind Nigeria .
Africa /location/location/contains Angola
Africa /location/location/contains Nigeria
DT JJ NN IN JJR NN MD VB NNP , NNP POS JJ NN NN IN NNP .
Africa
LOCATION
Angola
LOCATION
/location/location/contains
Africa
LOCATION
Nigeria
LOCATION
/location/location/contains