On Monday , when Ellen Johnson Sirleaf was inaugurated as president of Liberia , she became Africa 's first woman to be elected president .
Africa /location/location/contains Liberia
IN NNP , WRB NNP NNP NNP VBD VBN IN NN IN NNP , PRP VBD NNP POS JJ NN TO VB VBN NN .
Africa
LOCATION
Liberia
LOCATION
/location/location/contains