About: http://webisa.webdatacommons.org/438416141

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	Interest is intense in some periods, such as the late 1970s and early ???80s, almost completely absent others, such as the 1930s, and just an underlying murmur of an issue at other times, as it appears to be today.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com