Singapore , Oslo and Riga , the capital of Latvia , have all experimented with charging for driving in town .
Latvia
Riga
/location/country/capital
Latvia
Riga
/location/location/contains
Riga
Latvia
/location/administrative_division/country
Latvia
Riga
/location/country/administrative_divisions
LOCATION
Singapore
LOCATION
Oslo
LOCATION
Riga
LOCATION
Latvia