About: http://webisa.webdatacommons.org/218216554

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	These efforts became more common in the 1960s and 1970s, but became increasingly significant in the 1980s, when major newspapers and other publications begin to sponsor wide-ranging public opinion polls.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com