About: http://webisa.webdatacommons.org/28027586

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	Even with such pre-screening, however, it proves useful to impose conditions or controls on entry by potential participants in particular conversations.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com