<http://webisa.webdatacommons.org/prov/52204309>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/414917186> .
<http://webisa.webdatacommons.org/414917186>	<http://www.w3.org/ns/prov#value>	"Variables are characteristics that can be measured such as social class, age, sex, opinion and attitudes." .
<http://webisa.webdatacommons.org/414917186>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/414917186>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<questia.com> .