About: http://webisa.webdatacommons.org/320288140

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Lau says the HK$0.50 (US$0.06 ) plastic bag levy, introduced in 2009 and which currently covers 3,000 shops including supermarkets and convenience stores, shows how effective a charging system can be in changing people's behaviour.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org