About: http://webisa.webdatacommons.org/9423340

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	In most thorough, social science analysis of these relationships, extensive measures of family educational background, actual income (rather than simple categories), numbers of books in the household, and other measures are used.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com