About: http://webisa.webdatacommons.org/139046411

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	According to the 1999 survey results, alcohol, cigarettes and marijuana are the most frequently used substances among junior high school students (see Table 2-1).
http://www.w3.org/ns/prov#wasQuotedFrom	azlibrary.gov