About: http://webisa.webdatacommons.org/83019889

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	But, as you point out, it can be difficult to track responses to print materials such as newspapers and magazines.
http://www.w3.org/ns/prov#wasQuotedFrom	tmmpdx.com