About: http://webisa.webdatacommons.org/37578697

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	In addition, drug users can not know the purity of such drugs as heroin or cocaine; often overdoses are a result of underestimating the purity.
http://www.w3.org/ns/prov#wasQuotedFrom	kids.net.au