About: http://webisa.webdatacommons.org/115480237

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	As the use of illegal substances such as marijuana, speed and heroin have declined over the past ten years according to a study published by Columbia University???s Center for Addiction and Substance Abuse.
http://www.w3.org/ns/prov#wasQuotedFrom	spencereveningworld.com