About: http://webisa.webdatacommons.org/50884624

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	The most significant confounding factor is the use of other drugs, including alcohol and tobacco, by test subjects in conjunction with smokeshop.
http://www.w3.org/ns/prov#wasQuotedFrom	tobaccorevolution.com