The annual pro-democracy march on the anniversary of Britain 's transfer of Hong Kong to China in 1997 drew 21,000 people according to organizers and 17,000 according to the police .
China
Hong Kong
/location/location/contains
China
Hong Kong
/location/country/administrative_divisions
Hong Kong
China
/location/administrative_division/country
LOCATION
Britain
LOCATION
Hong Kong
LOCATION
China