Lagos , home to 15 million of Nigeria 's 137 million people , is among the world 's most troubled cities , replete with open sewers , foul tap water , garbage-strewn roads and traffic that perennially seems at a standstill .
Nigeria /location/location/contains Lagos
NNP , NN TO CD CD IN NNP POS CD CD NNS , VBZ IN DT NN POS RBS JJ NNS , JJ IN JJ NNS , JJ NN NN , JJ NNS CC NN WDT RB VBZ IN DT NN .
Nigeria
LOCATION
Lagos
LOCATION
/location/location/contains