<http://webisa.webdatacommons.org/64199514>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<gpo.gov> .
<http://webisa.webdatacommons.org/prov/152076485>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/64199514> .
<http://webisa.webdatacommons.org/64199514>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/64199514>	<http://www.w3.org/ns/prov#value>	"increase in the percentage of 8th graders who said marijuana is a risk" .