Africa is not a country ; it 's a continent , '' said LaVerne Nichols Hunter , a retired mathematics teacher in Pittsburgh , whose DNA test results placed her ancestors in Cameroon , Sierra Leone and Liberia .
Africa /location/location/contains Liberia
Africa /location/location/contains Sierra Leone
Africa /location/location/contains Cameroon
NNP VBZ RB DT NN : PRP VBZ DT NN , '' VBD NNP NNP NNP , DT JJ NN NN IN NNP , WP$ NN NN VBZ VBN PRP$ NNS IN NNP , NNP NNP CC NNP .
Africa
LOCATION
Liberia
LOCATION
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Africa
LOCATION
Sierra Leone
LOCATION
/location/location/contains
Africa
LOCATION
Cameroon
LOCATION
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